Cyclocross is a combination of cycling and running that originated in the winter months in Europe. Because of the adverse weather conditions, European road cyclists developed cyclocross (CX) as a way to maintain fitness and cycling form over winter. The popularity of cyclocross has spread to north America and, more recently, Australia.

Cyclocross races are held outdoors, offroad. Races are relatively short, ranging from 20 – 60 minutes. Serious competitors use lightweight bicycles resembling road bikes. Courses include sections where the rider must dismount and run with or carry their bike.