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Rocky Ridge and Alpine Lake



4.9 mile 7.9 kilometer loop


Ascent: 790' 241 m
Descent: -791' -241 m
High: 1,258' 383 m
Low: 657' 200 m


Avg Grade: 6% (4°)
Max Grade: 25% (14°)


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Trail shared by Hiking Project Staff

A path less traveled, this one rewards with diverse terrain and top-notch scenery.

Hiking Project Staff

Features Birding · Lake · River/Creek · Views · Waterfall · Wildflowers · Wildlife


This route offers some good views, solitude, and takes the hiker through a great cross-section of local flora. The first part is on a rocky fire road before you turn off onto a singletrack that travels through oak, manzanita, redwoods, lake-side scrub, and even marshes.

Need to Know

Be careful of your footing, and watch out for rattlesnakes!


To reach the start of the hike, park at the dam and cross it. This route could be done in either direction, but I like having the climb at the beginning to get the heart rate up.

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 hike a gradual up hill section back to the start. Cross the dam to the parking for a nice cool-down.

Flora & Fauna

Look for ospreys, which are frequently seen at these lakes.


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Jun 9, 2019
Lisa P
Aug 4, 2018
Ivan Vo
Jun 30, 2018
Hot 6.2mi
Aug 6, 2017
Gini See
Mar 25, 2017
Yingying Zhang
We went off the route and walked 2 more miles around the lake and back to the route 8mi

Trail Ratings

  3.7 from 3 votes


  3.7 from 3 votes
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in California


54 Views Last Month
2,059 Since Aug 10, 2016



Mt Tam seen across Bon Tempe Lake
Aug 10, 2016 near Kentfield, CA
Coming down into a potential swimming hole!
Aug 10, 2016 near Kentfield, CA
Lake Alpine seen through the trees.
Aug 10, 2016 near Kentfield, CA
Cruising through the meadow, headed to the final stretch.
Aug 10, 2016 near Kentfield, CA
Looking SE from Rocky Ridge Fire Road
Aug 10, 2016 near Kentfield, CA
Huckleberry tunnel, heading down to the shore of Alpine Lake
Aug 10, 2016 near Kentfield, CA