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United States
California
Marin County

Muir Woods National Monument

The best MTB trails in Muir Woods National Monument

4.7

(127)

1,408

riders

78

rides

Mountain biking in Muir Woods National Monument offers varied terrain within a protected natural area. The region is characterized by dense redwood forests, rolling hills, and a network of fire roads and trails. Riders can expect a mix of shaded paths, open ridge lines, and elevation changes. The landscape provides opportunities for both challenging climbs and scenic descents.

Best mountain bike trails in Muir Woods National Monument

  • The most popular mountain bike trail is Fern Creek and spring – Railroad Grade Fire Road loop from Mill Valley, a 14.2 miles (22.8 km) trail that takes 2 hours 16 minutes to complete. This route features a mix of fire roads and scenic creek crossings.
  • Another top favourite among local mountain bikers is Old Railroad Grade and Gravity Car Loop, a moderate 8.1 miles (13.0 km) path. This loop follows historical railroad grades through forested areas.
  • Local mountain bikers also love the Panoramic Highway – Dias Ridge Trail loop from Muir Woods National Monument, a 8.9 miles (14.4 km) trail leading through coastal hills and redwood groves, often completed in about 1 hour 28 minutes.
  • Mountain biking in Muir Woods National Monument is defined by redwood forests, fire roads, and scenic ridge trails. The network offers options for easy, moderate, and difficult ability levels.
  • The routes in Muir Woods National Monument are highly rated by the komoot community with an average score of 4.7 stars from over 180 reviews. More than 1900 mountain bikers have used komoot to explore Muir Woods National Monument's varied terrain.

Last updated: April 27, 2026

6

riders

#1.

Fish Gulch trail junction – Phoenix Lake loop from Mill Valley

53.0km

04:44

1,230m

1,230m

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels.

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Hard

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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5.0

(1)

5

riders

The Old Railroad Grade and Gravity Car Loop is a moderate 8.1-mile mountain bike trail in Mount Tamalpais State Park with historical sites a

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate

Moderate mountain bike ride. Good fitness required. Suitable for all skill levels.

Moderate
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Tips from the Community

Eric Cross
August 10, 2025, Phoenix Lake

log cabin at phoenix lake

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This "Four Corners" intersection on the saddle of Panoramic Highway is the transition for Sequoia Valley Rd crossing over to the Pacific side into Muir Woods Rd. There are also three trails arriving from the Bay side at this point. The views reach from the Bay on one side to the Pacific Ocean on the other.

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Lisa
February 5, 2025, Mountain Home Inn

Now open for more than a hundred years, this inn welcomes visitors high on the flanks of Mount Tamalpais. The guestrooms mostly face east, but the grounds include great vantages to the west over the Bay. There's also a restaurant, and this has been voted one of the most romantic spots in the Bay Area several times over.

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Traveler
November 6, 2023, West Point Inn

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 of this former hotel/restaurant built over 100 years ago when 'the crookedest railroad' carried weekend tourists up to the summit of Mount Tam. Today volunteers maintain the idyllic inn, provide hiking information and self-serve honor-based snacks and refreshments.

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Sue
November 1, 2023, Mountain Home Inn

This historic hotel with a long history, was built in 1912 by a Swiss-German immigrant couple who were homesick for their native Alps. It is perched on the ridge between the Mount Tamalpais peaks, high above Mill Valley, and boasts excellent views of Marin. It is a favorite spot to stay as a mountain getaway for outdoor enthusiasts in the Bay area, so much so that even celebrities like Goldie Hawn, the Grateful Dead and Jack London have stayed here.

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There is a great view of the northern point of Alpine lake where a small channel feeds over to Bon Tempe Lake. This is a great place to drop a line, or just enjoy the aquatic views.

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From easiest to hardest climbs out of phoenix lake from this junction: -Shaver Grade, easy grade, longer, shaded and pretty -Eldridge Grade, medium, good length and can connect you to mt tam east peak -Fish Grade fire road, very steep, we hiked the bikes

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On Shaver Grade Road, you get to ride along the incredibly blue waters of Phoenix Lake.

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Frequently Asked Questions

What kind of terrain can I expect when mountain biking in Muir Woods National Monument?

Muir Woods National Monument offers varied terrain, characterized by dense redwood forests, rolling hills, and a network of fire roads and trails. Riders will find a mix of shaded paths, open ridge lines, and elevation changes, providing opportunities for both challenging climbs and scenic descents.

How many mountain bike trails are available in Muir Woods National Monument?

There are over 80 mountain bike routes available in Muir Woods National Monument. These include 9 easy, 58 moderate, and 17 difficult trails, catering to a wide range of skill levels.

Are there any family-friendly mountain biking options in Muir Woods National Monument?

While Muir Woods National Monument is known for its diverse terrain, many of the trails are moderate to difficult. However, there are 9 easy routes available that could be suitable for families or beginners looking for a less strenuous ride. Always check individual route details for suitability.

What are some good mountain bike trails for beginners in Muir Woods National Monument?

For beginners, focusing on the easier routes is recommended. While specific beginner-only trails aren't highlighted, the region offers 9 routes classified as 'easy' which would be a good starting point. These typically feature less elevation gain and smoother surfaces.

Where can I find advanced mountain biking routes in Muir Woods National Monument?

Advanced riders will find 17 difficult mountain bike routes in Muir Woods National Monument. An example of a challenging route is the Bon Tempe Dam 🚡 – Shaver Grade Road loop from Mill Valley, which covers 44.2 km with significant elevation changes.

Are there any circular mountain bike routes in Muir Woods National Monument?

Yes, many of the mountain bike trails in Muir Woods National Monument are loops. Popular circular routes include the Fern Creek and spring – Railroad Grade Fire Road loop from Mill Valley and the Old Railroad Grade and Gravity Car Loop.

What do other mountain bikers say about the trails in Muir Woods National Monument?

The mountain biking trails in Muir Woods National Monument are highly rated by the komoot community, with an average score of 4.7 stars from over 180 reviews. Riders often praise the scenic redwood forests, well-maintained fire roads, and the variety of terrain available.

What are some scenic viewpoints or attractions along the mountain bike trails?

While mountain biking, you can encounter several natural attractions. Notable points of interest include the Fern Creek Trail and the majestic Cathedral Grove of Giant Redwoods. The Panoramic Highway – Dias Ridge Trail loop from Muir Woods National Monument also offers coastal views.

Are there any alternative mountain biking trails close to Muir Woods National Monument?

Yes, the broader region around Muir Woods National Monument offers additional mountain biking opportunities. For example, the Pantoll Road 🌲 loop from Mill Valley is another popular route nearby that provides a different experience within the area's natural beauty.

What is the typical duration for mountain bike rides in Muir Woods National Monument?

Ride durations vary significantly based on the trail's length and difficulty. For instance, the moderate Old Railroad Grade and Gravity Car Loop typically takes around 1 hour 14 minutes, while the more challenging Bon Tempe Dam 🚡 – Shaver Grade Road loop from Mill Valley can take nearly 5 hours.

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