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Total Elevation: 6,669 feet
Distance: 53.5 miles
Approx. Time: 4 hours





Escape reality and enjoy the entirety of the Bolinas Ridge on the Olema-Bolinas Ridge Gravel Ride, or The OBR Gravel Ride. Ascending Mt. Tam on Railroad Grade is just the start of this hefty mixed terrain ride. From East Peak, enjoy a mixture of pavement and gravel descending back down to the intersection of Ridgecrest and Bo-Fax. From there, your journey north along the Bolinas Ridge begins. The ridge is one of the best kept secrets of Marin. Immerse yourself in everything from redwood groves to cow pastures as you make your way up the county. After making it all the way up Bolinas Ridge, recover with a relatively flat pavement ride through West Marin. From Fairfax, you climb back up and around Mt. Tam on a number of fire roads. The ride concludes with the classic descent down Panoramic and through Four Corners back to Mill Valley.

From Studio Velo, climb W Blithedale Ave. Take Old Railroad Grade Fire Road and take Fern Canyon Rd to continue onto Railroad Grade Rd. Enjoy sweeping vistas of Southern Marin as you climb Railroad Grade all the way to the East Peak of Mt. Tamalpais. From the top, descend E Ridgecrest Blvd. Just before the Rock Springs parking lot, take a right on Rock Springs Lagunitas Rd followed by a left on Laurel Dell Fire Rd. Descend Laurel Dell and take a right on Ridgecrest Blvd. At the intersection of Bolinas Fairfax Rd, continue onto Bolinas Ridge. Take Bolinas Ridge all the way to Jewell, CA, where you will take a righto onto the Cross Marin Trail. Take a left when the trail intersects Sir Francis Drake Blvd. Take SFD until making a right on Meadow Way and continuing onto San Geronimo Valley Dr in San Geronimo, CA. Take a right back onto SFD when the road ends and follow that until turning right onto Olema Rd to get through Fairfax. In downtown Fairfax, take a right on Bolinas Fairfax Rd and left on Porteous Ave. At the end of the pavement, continue climbing up Deer Park Fire Rd. turn right on Shaver Grade Rd toward Bon Tempe Lake. Take Rocky Ridge Rd between Bon Tempe and Alpine Lakes then turn left on Shady Side Trail. Climb Shady Side, Lakeview Fire Rd, Elderidge Grade Fire Rd, and Indian Fire Rd up to Knob Hill. You will then take a right on Hoo-Koo-E-Koo and descend to Railroad Grade. Make an immediate right on Gravity Car Rd and follow that until taking a left down Panormic Hwy down to Four Corners. From there, you will take a left onto Edgewood Ave. Take a few turns down to Old Mill Park and then turn right onto Throckmorton to return to Studio Velo in downtown Mill Valley.


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