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    4.1-Mile Keyhole Loop

    Greenbrae, California

    41-Mile Keyhole Loop

    4.1-Mile Keyhole Loop Professional Guide

    Detailed Trail Description from our Guidebook

    "Follow the fire road (Shaver Grade Road), keeping Phoenix Lake (one of the five human- made reservoirs in this watershed) on your left. About three- quarters of a mile past the lake, turn right on singletrack trail at the signpost for Hidden Meadow Trail.

    The trail briefly runs parallel to the fire road before meandering to the right over a footbridge and then up a few tight switchbacks in the forest before reaching an open area. After the forest, the views that await after the short climb are fantastic."

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    Trail Information

    Greenbrae
    Nearby City
    Trail Guides

    Best Trail Runs San Francisco

    ADD TO BOOKSHELF
    Dog-friendly
    Accessibility
    4.1
    Distance
    548 feet
    Elevation Gain
    Loop/Lollipop
    Trail Type
    Easy
    Skill Level
    50 minutes
    Duration
    Year-round
    Season

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