Mountain Bike racing at Cambridge mainly focuses on cross country (XC) but there are also opportunities for downhill racing and entry into enduros and cyclocross races. The two main mountain bike races for CUCC are Varsity, usually in March, and BUCS (British Universities and Colleges Sport), usually in April. These are both XC races although BUCS usually incorporates downhill and 4X races too. Other XC races routinely entered by CUCC include the Thetford Winter Series, The Gorrick Spring Series and The British Mountain Bike Race Series. CUCC also usually enters teams into some of the twelve hour summer enduros.