AMA Monster Energy Supercross Championship

Monster Energy Supercross is an indoor dirt bike racing championship - a newer version of motocross, the sport’s original form. Whereas motocross takes place on long courses built primarily on the dirt and terrain offered up by nature, Supercross races are made from dirt hauled into stadiums. Monster Energy Supercross is held from January through May in open stadiums (in cities with nicer weather) and covered domes. The track takes all the exciting obstacles of outdoor riding—jumps, turns, and bumps—amplifies them, and puts them in easy view of spectators.

The Classes

There are two divisions racing: the 450 Class and the 250 Class. Top riders like Jason Anderson, Ken Roczen, and Eli Tomac are in the premier 450 Class, and they ride 450cc four-stroke motorcycles.

The 250 Class is populated primarily by younger riders on 250cc four-stroke motorcycles. The class is split into East and West Regions, each of which crowns its own champion.