Lake Lagunitas Dam – Eldridge Grade Fire Road 🚵 loop from Fairfax

Routes

Bike touring routes & trails

Lake Lagunitas Dam – Eldridge Grade Fire Road 🚵 loop from Fairfax

Hard

4.6

(8429)

8,430

riders

Lake Lagunitas Dam – Eldridge Grade Fire Road 🚵 loop from Fairfax

03:48

37.9km

980m

Cycling

Hard bike 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: August 13, 2026

Waypoints

Start point

Bus stop

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5.87 km

Sky Oaks Road (junction with Shaver Grade Road)

Highlight • Trail

At this point on Sky Oaks Road, there is a junction with Shaver Grade Road, which connects with a dense network of trails and dirt roads near Bald Hill in …

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6.80 km

Bon Tempe Lake

Highlight • Lake

West of Lake Lagunitas, Bon Tempe Lake is a reservoir managed by Marin Municipal Water District. It features striking scenery, with lush trees, clear water, and a peaceful atmosphere.

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8.19 km

Lake Lagunitas Dam

Highlight • Monument

The Lagunitas Dam, completed 151 years ago, was built in less than four months and was 480 feet long with a crest of 20 feet. The purpose was to supply …

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20.0 km

West Point Inn

Highlight • Mountain Hut

Great stop over along the trails on Mount Tam at the intersection of Old Railroad Grade, Old Stage, and Nora trails. Sit and enjoy the views from the wrap-around porch …

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20.1 km

Old Railroad Grade Trail (upper half) — Mt Tam

Highlight (Segment) • Trail

Old Railroad Grade trail follows the route of the railroad that reached the peak of Mount Tam from Mill Valley (and a spur to Muir Beach) between 1896 and 1930. …

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22.7 km

Mount Tamalpais East Peak and Visitors Center

Highlight • Summit

Beautiful views of the bay area that are well earned after all the climbing.

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27.2 km

Eldridge Grade Fire Road 🚵

Highlight (Segment) • Trail

Great hiking and mountain biking on this gravel fire road in Mt Tamalpais watershed. It climbs steeply from the intersection of Shaver Grade Road and Fish Gulch Fire Road near …

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30.9 km