L.A.'s Mountain Biking Trails Claremont Wilderness Trails Click Here for Map Take the I-10 to Indian Hill and go North to Baseline. Turn left on Mills road. Take Mills to the end and park in lot at left -- you'll see the gate. There are two main trails from the bottom - Burbank or Cobal. Both are intermediate fireroad climbs. Once you reach the top, you can drop down into Marshall Canyon (see Marshall canyon write up) or go up to Potato Mountain. Great fast trails with some single-tracks on the Marshall Canyon side. Beginner Current Trail Rating = 8.5 Click Here to Rate this Trail Click Here to Return to Trails Home