Bicycle motocross (BMX) started in the late 1960s in California, around the time that motocross became a popular sport in the USA. The motorised version of the sport was the inspiration for the human-powered competition.
BMX racing offered exciting action at a low cost and the infant sport became an instant hit, especially in California. This led to the foundation of a sanctioning body for BMX in the USA in the early 1970s. Over the following decade, the sport gradually gained in international popularity.