DIRECTIONS From Sacramento take I-80 east towards Reno. Take Forest Hill exit after you pass through Auburn and go 2.5 miles until you hit Old Foresthill Road. Turn right and the entrance is 1.5 miles ahead on left.
There are 25 miles of trails at Mammoth Bar. There is also 2 tracks. One is for 90cc and under kid course. The other track is a 3/4 mile long motocross track right next to the river. it has huge burms and rolling singles.