ElevationAscent: 0' 0 m
Descent: -1,326' -404 m
High: 1,520' 463 m
Low: 194' 59 m
GradeAvg Grade: 10% (6°)
Max Grade: 24% (14°)
Current trail conditions
Popular rides nearby
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Tennessee Valley to Horseshoe Bay
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6.3 mi 10.1 km • Loop • 847 ft Ascent 258.16 m Ascent
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“Steeped in history, this is touted as one of the very first downhill race courses.”— Dave Reed
As for the trail itself, it's essentially winding doubletrack that's officially called Cascade Canyon Road that heads from a neighborhood in Fairfax at its base to an intersection at San Geronimo Ridge Road at the top. It's a straightforward descent of ~1300 feet with many iconic waypoints as defined by the initial crew who raced it.
To get to the top, you can either ride straight up the beast or ascend via Pine Mountain Road off Bolinas Road to the south. From the top, you'll pedal out on a bit of a plateau before reaching the official downhill start point which just keeps going down and down and down.
Start at the top, end at the bottom, go as fast as you can!
Local Club: Marin County Bicycle Coalition