The Motocross des Nations is an annual team motocross race, where riders representing their country meet at what is billed as the "Olympics of Motocross". The event has been staged since 1947, where the team of Bill Nicholson, Fred Rist and Bob Ray, representing Great Britain, took home the Chamberlain Trophy for the first time.

Motocross is a form of off-road motorcycle racing held on enclosed off-road circuits. The sport evolved from motorcycle trials competitions held in the United Kingdom.