“A technically easy link-up encircling Mt. Tam and 4 of 5 north side reservoirs.”
— Riley McDonald on Apr 4, 2013
OverviewGreat views almost the whole time, but mostly on boring fire roads. Some sections have singletrack trails nearby that are for hiking only (ie. West of Ridgecrest Boulevard).
Need To KnowThere's one stream crossing and a REALLY steep hill at Alpine Lake.
The trail also floods at Kent Lake during winter (10+ ft under). Cross the spillway or go around.
DescriptionStart out on the main bike path in Mill Valley heading toward Scott Valley. Leave the bike path to follow Camino Alto to Overhill Rd on the left and the Escalon trailhead. Go past the fire gate and take the second left off the main trail to follow rolling hills. At the end of the trail, follow the road uphill to the Summit Trail. Take a right on Blithedale Ridge, a left on Indian Fire Road, and a right (downhill) on Eldridge. Enjoy the downhill.
Once you reach Lake Lagunitas, follow the paved roads going North for 1.2mi, then take a left on a dirt road toward Bon Tempe Dam. At the end of the road continue right on a trail and look for a good spot to cross the creek (aka. the North end of Alpine Lake) to your left. When the water is low you can ride across a skinny pipe bridging the creek, but it's sketchy. Ride/carry your bike up the trail leading up the steep hill toward pine mountain.
Cross Bolinas-Fairfax road at the top of the hill and take Pine Mt. Road for 1.5 miles. Take a left at the fork to continue on Pine Mt. Road. Enjoy the scenery as you traverse around the east side of Kent Lake. At the four-way intersection at the top of the hill take a left to follow the ridge going West. Continue straight on the obvious uphill singletrack at the third intersection to continue following the ridge. Descend the hill and cross the dam, descending more on the West side of the dam until a trail forks left (It is possible to cross the dry spillway in winter when the trail is flooded, but a ~30ft rope is nice for lowering/hauling your bike in/out of the steep sided spillway). Go left on the Shafter trail to gain the top of Bolinas Ridge.
Go left (south) at the top of the ridge until you hit Bolinas-Fairfax road. Cross the road and continue on Bolinas Ridge, following Ridgecrest Boulevard in Mt Tam State Park. Turn right at Rock Springs on the paved road toward Pantoll.
At the bottom of the hill cross Panoramic Highway and go through the Pantoll parking lot to Old Mine Trail. Continue straight at the top of Cardiac Hill to follow the Coast View Trail. Enjoy the singletrack and ocean views. At the end of the trail follow Highway 1 south toward Muir Beach. (Alt: Go left at the end of Coast View to descend the Heather Cutoff, then go right on Frank's Valley Rd to Muir Beach. Be warned, the Heather Cutoff is DIFFICULT singletrack.)
At Muir Beach, follow the Green Gulch Trail north through Green Gulch Farm. When it meets Coyote Ridge at the top of the hill, go straight on the singletrack, then right at the next fork until the singletrack ends at the Miwok trail. Continue straight through the intersection (follow the east-trending flat fire road) toward County View Dr. Follow the road at the end of the trail to the bottom of the hill, then go left on Bell, right on Marin Ave, and left on Tennessee Valley Rd. After 100ft on TV rd, follow the path on the wooden bridge left of the road. Continue under Highway 1 and take a left on the bike path to return to the start.
Try to go light as this ride has 13k+ elevation gain (via Google Earth).
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