Hidden Valley Loop Trail

The Hidden Valley Loop Trail is a 1.1 km looped trail that starts and ends in , Marin County, California. Based on our data, the hike is graded as Medium. For information on how we grade trails, please read measuring the difficulty of a hiking trail on hiiker. Also, check our latest community posts for trail updates. This hike can be completed in approx 0 hrs 18 mins. Caution is advised on trail times as this depends on multiple variables. For more info read about how we calculate hike time.