Motocross is a form of dirt bike racing that is held on a outdoor track.
California
In 1885, Gottlieb Daimler and Wilhelm Maybach invented the predecessor of dirt bikes. These bikes are used in motocross racing events, The first motocross competitions were held in Britain in the 1930's,
Supercross= usually races inside stadiums, unless it takes place at a speedway, like at the Daytona supercross. Supercross utilizes a single race format, meaning one final moto. To get to this final moto, the riders must qualify through a series of heat races. Supercross is fast, tight and technical. They have big jumps and rythem sections. Supercross usually races on Saturday nights... Motocross= Motocross races are held on tracks that are permanent, meaning, it isn't torn down after every race, like a supercross track is. The track is longer, wider, and most of them have natural terrain. A lot of outdoor tracks have hills and tricky sections, like sand or off camber corners. They have some big jumps. Motocross uses a 2 moto format. Like supercross, a rider must qualify through a series of heat races. Like I said before the motocross series uses a 2 moto format. The winner is determined with the best overall score. Motocross races are usually held on Sunday afternoons....
1896
Supercross started in 1972 when promoter Michael Goodwin set out to create what he considered to be the “Super Bowl of Motocross”.
No one can answer that definitively, this is an excerpt from FMX. "Many people will argue as to when Freestyle Motocross (FMX) started. It’s hard to put an exact date on it because it was more of a movement that just evolved over time."
Motocross is a form of motorcycle racing held on enclosed off-road circuits. The sport evolved from motorcycle trials competitions held in the United Kingdom.[1][2] Motocross is a physically demanding sport held in all-weather conditions.
The first Olympics were held in Athens in 1896.The events includes Track and field
HISTORY OF MOTOCROSS AND SUPERCROSS RACINGWhen motorcycle racing resumed here and abroad following World War II, US racing remained focused on "flat track," as it had before the war. Races were held on the numerous dirt ovals and horse tracks across the country. Limited schedules of AMA National road racing events were also being organized. Meanwhile, the first motocross races were being held in Europe. But motocross wasn't attracting widespread attention in the US. In 1947, the FIM created the Motocross des Nations, an annual event to determine the World Team Motocross Champions. In 1957, the FIM fully embraced motocross by creating an individual World Motocross Championship Series. Early motocross machines were incredibly primitive by today's standards. They were heavy, underpowered, and equipped with rudimentary suspension systems that did little to smooth out the rough terrain. But motocross had two undeniable elements that promised future success: it provided an affordable but highly challenging sport for participants, and offered incredible, up-close action for spectators. In the late 1960's, the European masters of motocross began to export their talents and technology to North America, where a related discipline of "rough scrambles" had developed independently. In a matter of a few years, motocross had taken hold in America. The AMA held a variety of amateur and Pro-Am motocross races in the late sixties. By 1972, American racers had motocross fever, and the AMA established a formal National Championship Motocross Series. At the time, US riders could only dream of beating their more experienced European counterparts. But international stars, led by Belgium's Roger DeCoster, gave the Americans something at which to shoot. And by the time the 1980's rolled around, the Americans had learned the lessons well enough to dominate the sport. During this decade of motocross racing, the United States delivered to the motorcycling world a new development that has changed the very face of the sport. In 1971, the AMA conducted a professional motocross race on a temporary track at Daytona International Speedway. While most motocross races had been held in the remote, rural countryside, Daytona brought motocross to the people. A year later, the concept was taken a step further - motocross was brought to major urban sports stadiums, beginning with the Los Angeles Coliseum. The term "Supercross," a combination of Super Bowl and Motocross, was coined. * http://www.amaproracing.com/archive/00sxmx/HIST/BGMOTO.HTM
motocross is held at a number of national races or just races. There organised by national clubs or regional clubs you pay between £50 to £15 to race all day but if you want an example visit www.southwestmotocrossclub.com , www.orpa.co.UK or www.southsomersetmotocrossclub.com hope this helps!
Track cycling is done in a velodrome.