13.5 km
~3 hrs 51 min
696 m
"An epic challenge to remember from the heart of Marin County"
The Cataract, Helen Markt and Serpentine Knoll Loop Trail is a 13.5 km looped trail that starts and ends in Stinson Beach, Marin County, California. Based on our data, the trail is graded as Difficult. 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 trail can be completed in approx 5 hrs 7 mins. Caution is advised on trail times as this depends on multiple variables. For more info read about how we calculate hike time.
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