The Hidden Pond – Old Boney Loop is a variation of the XTERRA Boney Mountain Trail Run 21K course. The route is about a half-mile longer and has a couple hundred feet more of elevation gain, but all the key trails are the same. It starts/ends at the Wendy Drive & Potrero Road Trailhead.
Here is an interactive 3D terrain view of the Hidden Pond – Old Boney Loop and a few photos taken along the way.
Related post: Boney Mountain Half Marathon