Supermoto

Supermoto (also called Supermotard due to its strong foothold in France) is a cross over of motocross and road racing. A big (typically 400cc to 700cc) motocross or enduro bike with spoked road race wheels on slick tyres, is ridden on a circuit approximately 70% tarmac and 30% dirt.
Races are commonly held on road racing tracks with the off road section in the in field. Riders wear road race leathers, as opposed to off road clothes.
Unlike normal motorcycle racing, the emphasis lies on slower (<100mph), short and twisty tracks, where skill matters far more than outright machine performance.
