L.A.'s Mountain Biking Trails Rocky Peak Click Here for Map From Northridge, take 118 west and get off at Rocky Peak. Make a right at the off ramp and the trail starts immediately from that point on... Best trail for most cardiovascular exercise given the shortest distance travelled. The fire road all the way to the top varies from being smooth to sandy to having water eroded ruts depending on the time of the year. You can continue on from the top and hit Chumash or take Humming Bird trail on your way down to test out your technical riding skills by riding the whole single track clean. Advanced Current Trail Rating = 8.5 Click Here to Rate this Trail Click Here to Return to Trails Home