Built specifically for mountain bikers, this rugged loop approximates the perfect ride. Nine miles of continuous singletrack passing through all variety of vegetation - chaparral fields, towering redwood groves, "one match" meadows, rock gardens, and creek crossings - connected with long switch-backing ascents and descents. Counter-clockwise may be the better route (debatable) as this sends you down the Serpentine Trail - a long, steep series of tight switchbacks.
It's also a great place to go hiking, as long as you don't mind the the mountain bikers.
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