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.