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Fern Creek and spring loop from Mill Valley

Fern Creek and spring loop from Mill Valley

Hard

3.2

(3)

riders

Fern Creek and spring loop from Mill Valley

01:52

21.1km

550m

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: June 8, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Blithedale Summit Open Space Preserve

Waypoints

Start point

Bus stop

Get Directions

2.03 km

West Blithedale Avenue Trailhead

Highlight • Trail

The wood bridge across the creek marks the beginning of the Old Railroad Grade, today a wide fireroad

Tip by

4.95 km

Old Railroad Grade Trail Gate Overlook

Highlight • Viewpoint

Sweeping views south and east, all the way to SF, and Mt Tam right above behind you to the north. The bench is dedicated to the family who built their house in front of you 60 years ago.

Tip by

5.06 km

Railroad Grade at Fern Canyon & Summit

Highlight • Trail

Uphill from this intersection a portion of the Railroad Grade has been taken over by Fern Canyon Rd after the Mt Tam railroad closed. A short distance uphill on pavement …

Tip by

6.75 km

Former Railroad and Gravity Car Station

Highlight • Historical Site

There are still remnants of old train platforms visible where the Gravity cars used to intersect with the Mt Tam Railroad.

Tip by

7.67 km

Old Railroad Grade: Blithedale to Gravity Car

Highlight • Trail

Bottom section of the most gradual route to Mt Tam summit, following the former tourist train that worked it's way up from Mill Valley til the 1930s

Tip by

9.05 km

Fern Creek and spring

Highlight • River

Delicious water emerging from the rock wall just past the creek along the fire road

Tip by

9.47 km

Railroad Grade Fire Road Overlook to San Francisco

Highlight • Viewpoint

On clear days views open up along the trail across the bay and including the San Francisco skyline

Tip by

10.2 km

Flowy downhill section above Laguna Creek

Highlight • Trail

After looping around West Point the Railroad Grade trail snakes through open and tree-lined sections with fun curves.

Tip by

10.5 km

Mount Tamalpais West Point

Peak

21.1 km

End point

Bus stop

Way Types & Surfaces

Way Types

14.9 km

5.97 km

145 m

< 100 m

Surfaces

14.9 km

6.03 km

< 100 m

Elevation

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

Highest point (530 m)

Lowest point (20 m)

Weather

Today

Thursday 11 June

38°C

16°C

0 %

Additional weather tips

Max wind speed: 23.0 km/h

to get more detailed weather forecasts along your route

Comments

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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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Fern Creek and spring loop from Mill Valley

West Blithedale Avenue Trailhead

Old Railroad Grade Trail Gate Overlook

Railroad Grade at Fern Canyon & Summit

Former Railroad and Gravity Car Station

Old Railroad Grade: Blithedale to Gravity Car

Fern Creek and spring

Railroad Grade Fire Road Overlook to San Francisco

Flowy downhill section above Laguna Creek

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