The 6th Annual Rivers Edge Mountain Bike Marathon is a 50 mile mountain bike which will test mountain bikers both mentally and physically. The race is held at the the Wood Run Mountain Bike Trails in the Uwharrie National Forest. The race will consist of five laps around a 10 mile loop. The event will be held on Sunday , April 28 , 2013. Solo Categories for Open Men , Open Men 40+ , Open Women , Single Speed , Novice Men. Duo Categories for Duo Male , Duo Female , Duo Coed. Corporate Challenge for up to five teammates.