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Routes
United States
California
Marin County
Fairfax

Fairfax – Big Rock Ridge loop from Fairfax

Routes
United States
California
Marin County
Fairfax

Fairfax – Big Rock Ridge loop from Fairfax

Hard

4.5

(1788)

17,935

riders

Fairfax – Big Rock Ridge loop from Fairfax

05:00

52.5km

1,510m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: March 27, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Loma Alta Open Space Preserve

Waypoints

A

Start point

Bus stop

Get Directions

1

159 m

Fairfax

Highlight • Settlement

This town, nestled in the forested hills among unspoiled open space in Marin County, is a nice respite from the large nearby metropolis. It is a quirky, hip place with a small-town vibe filled with restaurants, music venues, and independent shops. Fairfax is home to many musicians who live here, and on any given night, you can find live music featuring local and national touring acts jamming in a relaxed, casual atmosphere. It has a very cycle-friendly culture, and be sure to take the time to visit the Museum of Bicycling while you are here!

Tip by

2

7.57 km

Loma Alta Summit

Highlight • Summit

Loma Alta literally translates to "high hill" and is the highest point in the Loma Alta Open Space Preserve. A few different dirt roads and trails lead to the bald summit that looks over the surrounding hillsides.

Tip by

3

16.6 km

Big Rock Ridge

Highlight • Summit

Highest point on Big Rock Ridge Fire Road with panoramic views of the Bay, Marin county, and even across the East bay to Mt. Diablo and south to San Francisco. A short spur trail here leads to a point with slightly better views down over Skywalker Ranch and the Lucas Valley.

Tip by

4

20.9 km

At the junction of Chicken Shack Fire Road and Ponti Ridge Trail. There are benches, a great view, and trail markers.

Tip by

5

26.7 km

Terra Linda-to-Ignacio Bike Path

Highlight (Segment) • Cycleway

Smooth high-speed dedicated bike trail through a green corridor parallel to Hwy 101

Tip by

6

36.7 km

Big Rock -- Lucas Valley Rd Summit

Highlight • Natural Monument

Be careful on the descent, the pavement can get slippery. This is a great trail access spot for MTB and hiking.

Tip by

7

36.7 km

The Big Rock - Skywalker Ranch

Highlight • Natural Monument

As the name implies, a big bolder marks the crest of Lucas Valley Road above Skywalker Ranch, the elusive retreat and production studios of George Lucas and his various film projects.

Tip by

8

45.2 km

680 Trail

Highlight (Segment) • Trail

The 680 Trail in Marin County has access points at the end of Manuel T. Freitas Parkway via the Mission Pass Bike Path and Fawn Drive. The terrain is fun, rolling trails.

Tip by

B

52.5 km

End point

Bus stop

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Way Types & Surfaces

Way Types

22.4 km

12.5 km

11.9 km

3.75 km

1.83 km

< 100 m

< 100 m

Surfaces

34.5 km

15.9 km

1.70 km

385 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

Highest point (560 m)

Lowest point (10 m)

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Weather

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Tuesday 19 May

30°C

14°C

-- %

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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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