Rocky Ridge and Alpine Lake
ElevationAscent: 790' 241 m
Descent: -791' -241 m
High: 1,258' 383 m
Low: 657' 200 m
GradeAvg Grade: 6% (4°)
Max Grade: 25% (14°)
Current trail conditions
Popular runs nearby
Mt. Tam Wild Boar Half Marathon
11.4 mi 18.4 km • Point to Point • 1,446 ft Ascent 440.65 m Ascent
Singletrack Mill Valley, CA( 2 )
Steep Ravine - Matt Davis Loop
7.1 mi 11.4 km • Loop • 1,556 ft Ascent 474.2 m Ascent
Singletrack Bolinas, CA( 46 )
2.5 mi 3.9 km • Loop • 255 ft Ascent 77.77 m Ascent
Singletrack Tamalpais Valley, CA( 29 )
Palomarin to Alamere Falls Out and Back
8.3 mi 13.3 km • Out and Back • 991 ft Ascent 302.15 m Ascent
Singletrack Bolinas, CA( 41 )
Orchard Trail Loop
1.9 mi 3.0 km • Loop • 374 ft Ascent 114.06 m Ascent
Doubletrack Marin City, CA( 3 )
Navigate on-trail with our free app
Run this trail?
Add details to help others plan their adventure.
“A path less traveled, this one rewards with diverse terrain and top-notch scenery.”— Trail Run Project Staff
The first mile is a constant climb on Rocky Ridge Road. This road is aptly named with a lot of loose rock and ruts. Tread carefully. At Stocking Trail, turn right and follow the trail down through oaks and manzanita, past a marsh before intersecting the Kent Trail. Veer right and follow the Kent Trail through redwoods, past Hidden Lake, and through a tunnel of huckleberry bushes. At the right time of year (fall), there are delicious berries good for snacking on.
This long descent ends at the shores of Alpine Lake, where you'll turn right to continue on the Kent Trail and head along the shore of the lake. This trail can be a bit tricky footing-wise, so be careful. There are places where there has been some erosion and there are a lot of rocks and roots in the trail. Also beware of rattlesnakes!
On the day I was tracking this trail, I nearly stepped on one, jumping over it at the last minute. If I would have had my dog with me I think it would have been a bad deal. Another reason to always keep your dog on leash! This trail intersects the Kent Fire Road at the pump station where you'll run a gradual up hill section back to the start. Cross the dam to the parking for a nice cool-down.
Land Manager: Marin Municipal Water District