Photo of Trail Running Routes in Marin County

The Best Trail Running Routes in Marin County

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Top 1 trail running routes in Marin County

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Mount Tam Sea-to-Summit Loop

Hard
15.7 mi·
3,624 ft
Mount Tamalpais is the crown of Marin County at nearly 2,600 feet elevation, and it rules the horizon around most of the Bay Area. There are many routes to the top, but this loop is king of them all....

A view of the area

Top regions for trail running routes on Strava