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79-551: The ABA was founded as a governing body to preserve BMX racing's competitive spirit: "This need for fairness and allowing for the fortunes of luck led the way to the transfer system, in which the winner of each moto advances to the next round - be it quarter, semi or main event". In August 1977, Merl Mennenga created the ABA. In 1978, the first ABA National was held in Azusa, California , with 35 tracks and 3,000 participants. Following this in 1979,

158-510: A race track inside a stadium took place on August 28, 1948, at Buffalo Stadium in the Paris suburb of Montrouge. As the popularity of motocross surged in the United States in the late 1960s, Bill France added a professional motocross race to the 1971 Daytona Beach Bike Week schedule. The 1972 race was held at Daytona International Speedway on a constructed track on the grass surface between

237-641: A warm-summer Mediterranean climate , abbreviated "Csb" on climate maps. The 2010 United States Census reported that Azusa had a population of 46,361. The population density was 4,794.9 inhabitants per square mile (1,851.3/km ). The racial makeup of Azusa was 26,715 (57.6%) White (19.3% Non-Hispanic White), 1,499 (3.2%) African American , 562 (1.2%) Native American , 4,054 (8.7%) Asian , 87 (0.2%) Pacific Islander , 11,270 (24.3%) from other races , and 2,174 (4.7%) from two or more races. There were 31,328 people of Hispanic or Latino origin, of any race (67.6%). The Census reported that 43,559 people (94.0% of

316-469: A female householder with no husband present, and 25.9% were non-families. 18.7% of all households were made up of individuals, and 6.2% had someone living alone who was 65 years of age or older. The average household size was 3.41 and the average family size was 3.90. In the city, the population was spread out, with 30.8% under the age of 18, 15.5% from 18 to 24, 31.5% from 25 to 44, 15.3% from 45 to 64, and 6.9% who were 65 years of age or older. The median age

395-508: A few corrections to cross out the San Jose name on most of the census pages, but this was done sporadically and there remain many index errors in the online census due to these errors. Dalton had borrowed money from Los Angeles banker Jonathan S. Slauson to fund 24 years of litigation, and had to sign the land over to him in 1880. Slauson laid out the plan for the city in 1887 and the city was officially incorporated in 1898. The completion of

474-610: A four-year term and elected at-large. In the California State Legislature , Azusa is in the 22nd Senate District , represented by Democrat Susan Rubio , and in the 48th Assembly District , represented by Democrat Blanca Rubio . In the United States House of Representatives , Azusa is in California's 31st congressional district , represented by Democrat Grace Napolitano . The city mayor

553-595: A low admission fee, the venues were empty or well below capacity. The first event, at the University of Nevada's 10,000-seat Lawlor Events Centre, attracted only about 2,000 spectators. Bicycle racing of all types was more popular in Europe and South America, where crowds filled venues and racers were regularly featured in the news. The 1983 International Bicycle Motocross Federation-sanctioned world championship, held in Slagharen ,

632-551: A photographer's pass for the 1980 ABA nationals, and the magazine's coverage of ABA events was limited to brief comments and race results. The drop in coverage resulted in reduced interest in ABA events, which led to a decline in sponsorships and race funding (including the ABA nationals). BMX Action ended its editorial boycott partially due to an agreement with the ABA to stop publishing the association's in-house magazine, Bicycles and Dirt . A pro-rider boycott, led unofficially by Greg Hill and including racers such as Stu Thomsen ,

711-500: A row that riders normally clear in a single leap of 70 feet or more). Many of the turns have banked berms , but some are flat. It takes roughly five hundred truckloads of dirt to make up a supercross track. Soil conditions can be hard-packed, soft, muddy, sandy, rutted, or any combination thereof. In 2023, there are three broadcast partners from the NBC family of networks: NBC , USA Network and Peacock . Source: Between 2008 and 2021

790-677: A spectator attraction in the United States by the late 1970s. From 1974 until 2002 and again from 2008 until 2021, the series was the World Championship of the sport. After losing this status, and with respect to the MXGP holding that discipline's worldwide title, the series, along with the AMA Motocross Championship , will form the SuperMotocross World Championship from 2023. The first motocross race held on

869-453: A typical television schedule and audience attention span. Organizers hoped that increased exposure to BMX would spark a surge in beginner classes at the local level. The first ABA Pro Spectacular, held in Reno, Nevada , on January 4, 1985, attracted enough pros for a lively competition (thanks, in part, to the $ 10,000 purses offered for each race). Spectator attendance, however, was lackluster. Despite

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948-488: A way indicating that a phone had been tapped . Circumstantial evidence suggested that the USBA was responsible. By early 1986, the ABA was slowly getting back on its financial feet and the USBA was beginning to do poorly. Hall approached the ABA with an unsuccessful plan to buy the association from Anderson and Vargas. The USBA planned to have Mennenga buy the ABA and sell it to the USBA (which would liquidate it under chapter 7 of

1027-536: Is Robert Gonzales. On March 9, 2011, Azusa voters approved an agreement between Azusa Rock, Inc. and the city to address environmental issues associated with hillside mining in the area. The benefits of the proposed agreement has been questioned by several groups. Azusa is served by the Azusa Unified School District . Its schools include: Azusa lies along the Foothill Freeway (I-210) between

1106-535: Is a city in the San Gabriel Valley region of Los Angeles County, California , United States, at the foot of the San Gabriel Mountains and located 20 miles (32 km) east of downtown Los Angeles . Its population was 50,000 in 2020, an increase from 46,361 at the 2010 census . Azusa is located along historic Route 66 , which passes through the city on Foothill Boulevard and Alosta Avenue. Azusa

1185-647: Is an American motorcycle racing series. Founded by the American Motorcyclist Association (AMA) in 1974, the AMA Supercross Championship races are held from January through early May. Supercross is a variant of motocross which involves off-road motorcycles on a constructed dirt track consisting of steep jumps and obstacles; the tracks are usually constructed inside a sports stadium. The easy accessibility and comfort of these stadium venues helped supercross surpass off-road motocross as

1264-413: Is best described as motocross racing that takes place within the confines of a sports stadium. The tracks are typically shorter in length than a standard motocross track. They feature a combination of man-made obstacles such as whoop sections (where riders skim along the tops of multiple bumps), rhythm sections (irregular series of jumps with a variety of combination options), and triple jumps (three jumps in

1343-466: Is bordered by the San Gabriel Mountains range to the north, Irwindale to the west, the unincorporated community of Vincent to the southwest, Glendora and the unincorporated community of Citrus to the east, and Covina to the south. The name "Azusa" appears to have been derived from the Tongva place name Asuksa-nga , meaning "skunk place," with asuksa meaning skunk and -nga denoting place. The area

1422-505: Is in the top ten in national points, and has yet to qualify after either heat race or consolation race, will receive a provisional for the feature race. The feature race is 15 minutes plus one lap in the 250cc class, and 20 minutes plus one lap for the 450cc class, with 25 championship points for the race win. At 3 races per year a three race format is use. The rules are similar to the Monster Energy Cup individual scoring will determine

1501-471: Is six minutes plus one lap. Each heat features 20 riders (one may have 21 riders depending on qualifying results), with the top nine advancing to the feature. The other 22 riders are relegated to the consolation race, known as the Last Chance Qualifier, which is five minutes plus one lap, with the top four advancing to the final. In the 450cc class, the highest placed competitor in points, provided he

1580-731: The Los Angeles County Metropolitan Transportation Authority in 1993. MTA is currently pre-constructing and planning to extend the line to the end of its reserved right-of-way in Montclair , just across the San Bernardino County line. In October 2009, the MTA Board unanimously voted to include the Foothill Extension in its long-range plan, and approved funding for the construction and operation of

1659-560: The Los Angeles and San Gabriel Valley Railroad in January 1887, later sold to the Santa Fe railroad , brought new people looking for homes and investment opportunities to Azusa. The A Line Foothill light rail line was built on the old rail right-of-way. Part of this land boom was the short-lived town of Gladstone in 1887, which merged into Azusa in 1905. The city is located at the entrance to

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1738-633: The National Bicycle League , increased animosity between the NBL and the ABA. Mennenga attempted to discourage participation in the Knott's Berry race. Mennenga thought that the USBA stole ABA membership records to ask ABA racers to join the USBA. A disgruntled spectator filed a false police report that Mennenga had assaulted her. He was arrested during an event and later released when the charges were dropped. On March 5, 1985, Mennenga announced that he had sold

1817-463: The Netherlands , attracted 15,000 to 20,000 spectators and was broadcast live on European television. A campaign of 68 30-second TV advertisements during popular US programs such as Magnum, P.I. , Dynasty and Good Morning America failed to attract comparable North American interest. Rod Keeling, before the ABA, had no experience with BMX racing. He left the ABA on March 2, 1984, and announced

1896-697: The San Gabriel River Freeway (I-605) and the Orange Freeway (SR 57). Azusa Avenue ( SR 39 ) extends from the Angeles National Forest starting at San Gabriel Canyon Road/Sierra Madre Avenue south through Orange County . Azusa serves as the terminus for the Los Angeles Metro Rail A line light rail , which stops at Azusa Downtown station adjacent to Azusa City Hall before terminating at APU/Citrus College station at

1975-669: The Seattle area, as president. They decided to hold the remaining Pro Spectaculars, despite the financial gain of canceling them, to preserve their relationship with the pros. Vargas and Anderson tried to stave off bankruptcy, although bankruptcy protection would have benefited the ABA; the new management feared the optics of bankruptcy for track operators and the USBA. With reported liabilities to twenty creditors of $ 700,000 to $ 750,000, however (most attributable to Bicycles and Dirt ), they filed for Chapter 11 bankruptcy protection on November 25, 1985. The USBA exploited track operators' concern about

2054-613: The poverty line , including 23.9% of those under age 18 and 10.4% of those age 65 or over. Mexican and German were the most common ancestries. Mexico and the Philippines were the most common foreign countries of birth. According to the City of Azusa's FY 2014-15 Comprehensive Annual Financial Report, the top employers in the city are: Azusa was the former home of the Lucky Lager brewery and its successor, General Brewing. Built in 1949,

2133-468: The "outdoor" (Motocross) and "indoor" (Supercross) schedules coinciding with each other during the year. By 1986, the schedule was compacted to a January to June schedule, and in 1998, the series adopted its present format, starting in early January and ending in early May, with races weekly except for Easter weekend (a traditional off-week for motorsport in the United States). In 2000, the present calendar

2212-629: The 1848 Treaty of Guadalupe Hidalgo provided that the land grants would be honored. As required by the Land Act of 1851, a claim for Rancho San Francisquito was filed with the Public Land Commission in 1852 and confirmed by the Commission in 1853, but rejected by the US District Court in 1855, on the grounds that Henry Dalton was not, at the time of the grant, a citizen of Mexico. The decree

2291-407: The 1980 season. In 1978, the National Bicycle League (NBL) had 18 tracks and about 4,100 riders; it was the sport's first sanctioning body. Other BMX organizations included: Complaints about high entry fees and subpar track conditions were lodged against the ABA. BMX Action ( BMXA ) managing editor, publisher, and owner Robert Osborn initiated an editorial boycott of the ABA after he was denied

2370-484: The 250cc (was 125cc two-stroke). Supercross racing classifications are governed by the displacement of the motorcycle's engine. They were based on two-stroke engines until 2006, when four-stroke engines replaced two-stroke engines. From 2007 until 2012, a formula nomenclature similar to IndyCar was used, with the 450cc class known as Supercross and 250cc as Supercross Lites. Starting in 2013, the AMA and Feld Motor Sports returned to

2449-566: The ABA became BMX racing's largest governing body. In 1980, Greg Hill objected to the 1979 season's points scoring. In 1982, the ABA discarded their points system, and the first issue of Bicycles and Dirt was published that September. In 1983, an informal pro-rider boycott began and the BMX Action began an editorial boycott against the ABA. In 2008, American BMX racers won three medals in Beijing and nine BMX World Cup (Supercross) events. Most of

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2528-483: The ABA that put them towards bankruptcy in the first place. You can quote me on that". Most track operators realized that Chapter 11 protection could be a sound business decision. They knew other companies in the industry that were in the same position as the ABA was but came out of it. The Van Doren Rubber Company, maker of Vans shoes favored by BMX racers, freestylers and skateboarders, had emerged from bankruptcy. By late 1985, commercial pilots Sims and Cook had left

2607-479: The ABA to Bernie Anderson and Jamie Vargas (two ABA track operators) for $ 250,000 and had resigned as president. Vargas was a computer consultant who operated Louisiana's first track. Anderson owned a magazine-subscription-sales company and founded Rebel Racing, a regional BMX bicycle company; he also operated Texas' first successful track. Both men had sons who were racers. The new owners installed Walt Ehnat, who had partnered with Gary Ellis Sr. in running four tracks in

2686-558: The ABA's solvency. Gary Ellis Sr., father of pro racer Gary Ellis , ran the ABA-affiliated River Valley BMX track in Sumner, Washington . Ellis Sr. felt that bankruptcy was good for the ABA, since it removed most of the management which put the association into dire financial straits: "... We basically felt ... well, I basically felt the person that started the USBA was part of the bad managment [ sic ] of

2765-575: The East, and Daytona International Speedway , which promotes its own race. In the 1980s, Mickey Thompson Entertainment Group (MTEG) took over the West region. In the 1990s, MTEG went bankrupt and Super Sports sold its business to Pace, which became the primary AMA Supercross promoter (with Daytona continuing to be the one holdout). In 1998, Pace was bought by SFX Entertainment , which was bought in turn by Clear Channel in 2000. The live events division of Clear Channel

2844-626: The Foothill Extension's first phase to Azusa. This phase of the extension broke ground in June 2010. The Metrolink San Bernardino Line stops nearby at Covina station and Baldwin Park station several times each day. Azusa's main arterial streets are: The Los Angeles County Department of Health Services operates the Monrovia Health Center in Monrovia , serving Azusa. A popular running gag on

2923-585: The Grand Nationals, representing 46 states and 20 countries. The American Bicycle Motocross Association (ABMXA) operated from late 1974 to early 1976. An American Bicycle Association was created in January 1975 by Bob Bailey, but went bankrupt by December 1975 with only 20 paid members. In 1978, the National Bicycle Association (NBA) had 50 tracks and 5,000 racers. BMX Actions boycotted the NBA during

3002-514: The Heat Races, LCQs or the Feature Races, that the race is red-flagged within less than 3 laps, the race will be a complete restart. However, if the race is red-flagged with more than 3 laps completed but less than 90% of the total race distance and after a minimum of a 10-minute delay, the race will be a staggered restart with riders lined up from the previous lap they went. The sport of Supercross

3081-472: The Huffy BMX team, noticed that Erhart seemed to be privy to a letter that Hadley had shared with John; Hadley joked that John's office must have been bugged . John took Hadley's joke seriously, and had ABA headquarters swept for bugs by experts in countersurveillance and corporate espionage . Two experts found evidence of tampering in a telephone trunk line leading to John's office; the wires were stripped in

3160-538: The National Bicycle League from USA Cycling . The ABA's U.S. Gold Cup series was created in 1981. In 2000, as part of a sponsorship agreement with Redline Bicycles , it was renamed the Redline Cup Series until 2014; that year, the series returned to its Gold Cup name. A series of regional championship events primarily for non-sponsored amateur racers, it became a six-race qualifying series in 1982 which

3239-701: The San Gabriel Canyon, giving the city its nickname "The Canyon City." It is on the east side of the San Gabriel River . According to the United States Census Bureau , the city has a total area of 9.7 square miles (25 km ); over 99% of it is land. This region experiences warm, dry summers, with no average monthly temperatures above 71.6 °F (22.0 °C). According to the Köppen Climate Classification system, Azusa has

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3318-608: The US. Beginning with Anaheim 1, the series holds two of its first five races at Angel Stadium before it heads eastwards. The series concludes in Salt Lake City in early May. The East-West Shootouts Occur at round 14 & 17. The series also holds a race in Daytona during Daytona Bike Week . Each meet is structured similarly to Short track motor racing with two heat races and a consolation race in each class. In both classes, each heat race

3397-468: The USBA for flying jobs. Keeling was forced out by USBA investor Ira Hall and replaced with a new management team, including USBA president Walt Ehnat. Ehnat was Keeling's vice president at the USBA, who had replaced Merl Mennenga as ABA president. A few months later, he was fired by the ABA's new management. Ehnat was replaced as ABA president by BMX track operator and former motorcycle racer Clayton John, and became USBA vice president. Bob Hadley, manager of

3476-467: The bankruptcy code), but nothing came of it. The USBA was ultimately bought out by the ABA. On September 24, 1987, a United States bankruptcy court approved the ABA's financial reorganization plan. Professional and amateur champions received promised prizes. The 1988 Grand National in Oklahoma City , with 470 entries, was the largest BMX race in history. In 2002, the ABA unsuccessfully tried to purchase

3555-416: The city was 52.35% White , 3.78% Black or African American , 1.31% Native American , 6.14% Asian , 0.17% Pacific Islander , 30.52% from other races , and 5.73% from two or more races. 63.79% of the population were Hispanic or Latino of any race. There were 12,549 households, out of which 43.5% had children under the age of 18 living with them, 49.7% were married couples living together, 17.1% had

3634-530: The coining of the term "Supercross." The Super Bowl of Motocross II held the following year was an even greater success and, eventually evolved into the AMA Supercross championship held in stadiums across the United States and Canada. Originally, each of the AMA Supercross races were promoted by different promoters, most notably Mike Goodwin in the West, Pace Motorsports in the Midwest and Southwest, Super Sports in

3713-650: The combined East-West Shootout will also be held in the middle of the season, at the Indianapolis round. Starting with the 2012 Season, riders who are in first place in the Series' Points Lead will use the red plate to race in the Series. Starting with the 2024 Season, the reigning champion from the SuperMotocross Championship in the 250cc & 450cc class, will use a purple plate with yellow numbers to signify their status as an SMX Champion. If at any point during

3792-470: The cover. The magazine's financial situation was poor and, to end the editorial boycott by BMX Action, the ABA ceased publication of Bicycles and Dirt with the September 1984 issue. The rising cost of insurance affected every BMX organization during the early 1980s, and the ABA was particularly vulnerable because of Bicycles and Dirt 's financial difficulty. The first indications that BMX's popularity

3871-583: The creation of the United States Bicycling Association on March 23 of that year. ABA president Merl Mennenga saw the USBA as a betrayal, and said at a press conference that the rival organization was intended to undermine the ABA. The ABA had a dispute with the promoters of the 1981 $ 10,000 Knott's Berry Farm race because it was scheduled opposite the Grand National in Oklahoma City , Oklahoma . The Knott's Berry Farm race, sanctioned by

3950-489: The eastern border of Azusa by Citrus College . On March 5, 2016, Azusa became the eastern terminus of the first phase of the Foothill Extension of the L Line (now the northeastern terminus of the A Line) which previously operated between Los Angeles Union Station and Sierra Madre Villa station in eastern Pasadena . The A Line operates along former Atchison, Topeka and Santa Fe Railway right-of-way purchased by

4029-496: The facility was purchased and converted to production by Miller Brewery in May 1966. A decade later, Miller relocated its operations to the nearby city of Irwindale and the Azusa facility ceased production in 1980, eventually being demolished. Aerojet , a rocket engine manufacturer, had a plant in Azusa from World War II to 2001. In 1980, it was determined that under Aerojet's facility there

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4108-411: The lack of press coverage. The ABA's in-house newspaper, ABA Action , did not generate sufficient coverage because it was restricted to the ABA membership. The association tried to create its own magazine, Bicycles and Dirt , to circumvent the established press and attract advertisers. Forgoing a subscription model to attract a larger audience, the ABA first sold BAD on newsstands with Stu Thomsen on

4187-429: The long-running radio comedy The Jack Benny Program involved a character voiced by Mel Blanc announcing the arrival or departure of a train to or from " Anaheim , Azusa, and Cuc-a-monga ," all three then being small towns without rail service at the time. Azusa boasted the world's first Go Kart factory as of 1958. The product proved very popular. Go Kart went into bankruptcy in 1963. The city's name appeared in

4266-492: The main contaminants is perchlorate , a carcinogenic component of rocket fuels produced by Aerojet. City Council elections were held on a Tuesday after the first Monday in March in odd-numbered years until the 2017 election. Effective with the 2020 California Primary election, it will be held on a Tuesday after the first Monday in March of even-numbered years. The Mayor is elected to a two-year term, City Council members are elected to

4345-508: The main grandstand and the pit lane. Jimmy Weinert won the 250 class and Mark Blackwell was the winner of the 500 class. The event that paved the way for constructed, stadium-based motocross events was a 1972 race held in the Los Angeles Memorial Coliseum , promoted by Mike Goodwin and Terry Tiernan, then-president of the AMA, and won by 16-year-old Marty Tripes . It was billed as the "Super Bowl of Motocross" which led to

4424-477: The overall race winner. For the season-ending East-West Shootout at Las Vegas for the 250cc class starting in May 2011, each region's top 20 will race in the non-championship event for a 15-minute heat race. Standard rules apply, with the feature race being 10 laps. In 2016, the East-West Shootout became a points-paying round where both regions' champions would be decided in the same feature. Starting in 2018,

4503-524: The owner of the large, adjacent Rancho San Francisquito and Rancho Santa Anita properties. In the end, Dalton owned an unbroken expanse of land from present-day San Dimas to the eastern edge of Pasadena . A portion of Azusa west of the San Gabriel River was within adjacent Rancho Azusa de Duarte . With the cession of California to the United States following the Mexican–American War ,

4582-541: The point systems detrimental to professionals, however, because a consistent season could be undone by a one-off performance. After the 1982 Grand National, the pro and amateur classes were subject to the transfer system for the 1983 season. President Merl Mennenga reportedly told Hill that the "... ABA doesn't cater to the pros." The ABA also had reduced coverage in other BMX press, including BMX Action's biggest competitors ( BMX Plus! and Super BMX ). Many ABA nationals coincided with national NBL competitions. In addition to

4661-650: The population) lived in households, 2,691 (5.8%) lived in non-institutionalized group quarters, and 111 (0.2%) were institutionalized. There were 12,716 households, out of which 5,955 (46.8%) had children under the age of 18 living in them, 6,310 (49.6%) were opposite-sex married couples living together, 2,275 (17.9%) had a female householder with no husband present, 1,014 (8.0%) had a male householder with no wife present. There were 891 (7.0%) unmarried opposite-sex partnerships , and 104 (0.8%) same-sex married couples or partnerships . 2,238 households (17.6%) were made up of individuals, and 761 (6.0%) had someone living alone who

4740-580: The population) lived in owner-occupied housing units and 20,754 people (44.8%) lived in rental housing units. During 2009–2013, Azusa had a median household income of $ 52,001, with 20.1% of the population living below the federal poverty line. As of the census of 2000, there were 44,712 people, 12,549 households, and 9,298 families residing in the city. The population density was 5,023.7 inhabitants per square mile (1,939.7/km ). There were 13,013 housing units at an average density of 1,462.1 units per square mile (564.5 units/km ). The racial makeup of

4819-411: The pro boycott of the ABA nationals, other races were often scheduled on the same weekend as ABA events. The press favored NBL events, leading to a further decrease in coverage. The decrease meant that fewer companies (BMX and non-BMX) purchased advertising and sponsorship spots, and stopped sending their well-funded race teams to ABA events. Most non-sponsored BMX racers stopped attending ABA events due to

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4898-521: The racers grew up going to ABA tracks. The USA Cycling and the U.S. Olympic Committee collaborated with the ABA to build amateur and elite tracks for Olympic training. In 2011, the ABA nought the National Bicycle League (NBL), creating USA BMX. In 2022, USA BMX partnered with Stacyc Stability Cycles for the STACYC World Series to assist children aged 3-7 with bicycling. Later in the year, Tulsa-based USA BMX headquarters opened to host events such as

4977-449: The rancho's land to Henry Dalton, an English immigrant and wealthy merchant from the Pueblo of Los Angeles , for $ 7,000. He renamed it Rancho Azusa de Dalton , and had built a winery, distillery, vinegar house, meat smokehouse, and flour mill. Also, a vineyard was planted. Dalton built a house here on a place known as Dalton Hill, near 6th Street and Cerritos Avenue in Azusa. Dalton was also

5056-472: The rider who wins all three featured races. Ryan Villopoto won the purse at the inaugural event in 2011, as did Marvin Musquin in the 2017 edition, and Eli Tomac in the 2018 race. The AMA series begins in early January and continues until early-May. It consists of 17 rounds in the 450cc Class, and 9 rounds in 250cc West Class and 9 rounds in the 250cc East Class, held in football and baseball stadiums across

5135-611: The teen mothers continue their studies while pregnant. In Hold Back the Dawn (1941), Emmy Brown ( Olivia de Havilland ), a schoolmarm from Azusa, recites the claim that it "stands for everything from A to Z in the U.S.A." The same happens in A Woman's Secret (1949), with Susan Caldwell ( Gloria Grahame ), born and raised in Azusa, describing the town's name as "kind of a made-up name". Azusa has one sister city : AMA Supercross Championship The AMA Supercross Championship (commercially known as Monster Energy AMA Supercross )

5214-486: The title of the Jan and Dean song "Anaheim, Azusa, & Cucamonga Sewing Circle, Book Review and Timing Association" in 1964. In 1971 Life magazine ran a cover story on teen pregnancy featuring a unique program for pregnant high school teens. The story focused on teenage mothers attending Citrus High School in Azusa. At a time when many pregnant teens were shunned by their schools and families, Citrus High School sought to help

5293-399: The traditional nomenclature, based on four-stroke engines: 450cc (known as "MX1" in Europe), and 250cc (also known as "MX2"). The 450cc Champion has always been generally considered to be the most prestigious. From 2011-2019, the final race of the season, known as the Monster Energy Cup for sponsorship reasons, is held at Sam Boyd Stadium in Las Vegas. A US $ 1 million purse is available to

5372-458: Was TCE water contamination in the groundwater , whose plume was entering the aquifer under the city and of the San Gabriel Valley groundwater basin. The San Gabriel Valley aquifer is very valuable, providing most of the drinking water in the area at a fraction of the cost of water imported by aqueducts. In 1985, the U.S. EPA declared it a Superfund Site . In 1997, additional chemical contamination, mostly NDMA and ammonium perchlorate ,

5451-408: Was 27 years. For every 100 females, there were 97.5 males. For every 100 females age 18 and over, there were 93.6 males. The median income for a household in the city was $ 39,191, and the median income for a family was $ 40,918. Males had a median income of $ 30,845 versus $ 26,565 for females. The per capita income for the city was $ 13,412. About 15.1% of families and 18.8% of the population were below

5530-419: Was 29.3 years. For every 100 females, there were 96.0 males. For every 100 females age 18 and over, there were 92.8 males. There were 13,386 housing units at an average density of 1,384.4 units per square mile (534.5 units/km ), of which 6,802 (53.5%) were owner-occupied, and 5,914 (46.5%) were occupied by renters. The homeowner vacancy rate was 1.4%; the rental vacancy rate was 6.6%. 22,805 people (49.2% of

5609-419: Was 65 years of age or older. The average household size was 3.43. There were 9,599 families (75.5% of all households); the average family size was 3.85. The population was spread out, with 12,407 people (26.8%) under the age of 18, 7,724 people (16.7%) aged 18 to 24, 13,185 people (28.4%) aged 25 to 44, 9,469 people (20.4%) aged 45 to 64, and 3,576 people (7.7%) who were 65 years of age or older. The median age

5688-588: Was adopted with the season starting in the Los Angeles area on the Saturday after the first Thursday of January (between January 3–9) and ending with an early May race in Las Vegas, after which the AMA Motocross Championship "outdoor season" begins. The American Motorcyclist Association awards three Supercross Championships each year. They are the 450cc (was known as 250cc two-stroke), and both an East and West division on

5767-406: Was established on the basis of Hill's 1980 allegation that the pro points system was unfair. The pro with the most points was selected to go to the ABA's Grand National competition. Points earned were equal to the amount of money earned that year; the ABA pro who won the most money was declared number one, and the ABA said that revenue-based standings provided an exciting end to a season. Racers called

5846-654: Was flattening appeared in 1984, as membership and race attendance declined. In 1984, the drop in popularity of BMX racing was outstripped by the growth of BMX freestyle bicycles. Local track operators noted a decline in beginner-class entries. Attempting to curb its financial losses, the ABA attempted a Pro Spectacular: an event inspired by Motorcycle Motocross (MX) Supercross . Events were held in indoor arenas, with more difficult tracks to appeal to spectators. The Pro Spectacular events were restricted to professionals and heavily advertised on television. Races were held on Friday nights, and broadcasts were limited to two hours to fit

5925-503: Was found in the site's groundwater. Aerojet was named the Responsible Party for the groundwater remediation (cleanup) work and expenses. Aerojet sold the property in 2001 to Northrop Grumman Corporation, but remained the Responsible Party for the pollution. In a 2002 court decision, Aerojet and seven other San Gabriel Valley groundwater polluters agreed to provide funding to build and operate six water-treatment facilities. One of

6004-584: Was held in conjunction with the nationals. From 1981 to 1987, the series was also known as the Gold Cup East-West Shootout. From 1989 to 2012, the regions were Western, Central, and Eastern; riders had to compete in the regional finals where they lived, not where they qualified. The regional finals were held in September. In 2007, the Redline Cup season was from January 28 to mid-August. Azusa, California Azusa ( Tongva : Asuksa-nga )

6083-675: Was part of the homeland of the indigenous Tongva people ( Gabrieleño Indians) since at least 55 BC. A backronym , "Azusa stands for everything from A to Z in the U.S.A.", has been a phrase used for many years by organizations such as the Chamber of Commerce to promote the city. The first Mexican settlement in Azusa was at the Rancho el Susa in 1841, a Mexican land grant from the Alta California Governor Juan Bautista Alvarado to Luis Arenas . In 1844, Arenas sold

6162-466: Was reversed by the US Supreme Court , and the grant was patented to Henry Dalton in 1867. Azusa was listed in the 1860 census as a township (encompassing the Azusa de Dalton and Azusa de Duarte ranchos) with a population of 363. The 1870 US Census listed the area as the township of Azusa – El Monte Township and 1880 US Census listed the area as the township of San Jose and Azusa. There were

6241-443: Was split off as Live Nation in 2005, and the motorsports division was sold to Feld Entertainment in 2008, which currently promotes the championship except for the Daytona round, which is promoted by NASCAR Holdings (the owner of Daytona International Speedway). While growing consistently since the '70s, the modern Supercross schedule since 1985 has become further compacted. The schedule would run from February to November, with both

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