The Motocross of Nations (MXON), also known by its original French name Motocross des Nations (MXDN) 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 the United Kingdom, took home the Chamberlain Trophy for the first time.