Rocky Ridge Road, Serpentine Knoll, High Marsh and Helen Markt Loop Trail
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15.5 km
~3 hrs 59 min
535 m
Loop
The Rocky Ridge Road, Serpentine Knoll, High Marsh and Helen Markt Loop Trail is a 15.5 km looped trail that starts and ends in Fairfax, 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 3 hrs 59 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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