Events held in Europe are typically just a little longer than the average cross country mountain bike race.Marathon events in the USA and Canada are typically longer than 100 kilometres (62 miles) and are very different from cross country races.Events based on hours typically allow either people to compete individually or as part of the team.The world's largest mountain bike marathon race by the number of participants is the Birkebeinerrittet, 95 kilometres (59 mi), held annually in Norway.While the distance is short for a marathon mountain bike event, the number of participants and history make it noteworthy.