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Old Mine Trail (lower) 🌲 loop from Mill Valley

Old Mine Trail (lower) 🌲 loop from Mill Valley

Hard

4.6

(8709)

9,674

riders

Old Mine Trail (lower) 🌲 loop from Mill Valley

04:21

47.4km

1,270m

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 14, 2026

Tips

Includes a very steep uphill segment

You may need to push your bike.

After 31.7 km for 112 m

Waypoints

Start point

Bus stop

Get Directions

3.19 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

6.11 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

6.22 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 brings you to the end of Fern Cyn. A bit before the end the Railroad Grade gravel forest road splits off again to the right. The Temalpa Trail that joins here is steep with stairs, not open to biking.

Tip by

8.83 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

10.6 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

11.3 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

11.6 km

Mount Tamalpais West Point

Peak

11.8 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. This segment starts about mid-mountain at the site of an old station (notice the concrete "sidewalk" on the side of the trail), at the intersection with Gravity Car Trail and Hoo-Koo-Ee-Koo trail, just above the Double Bowknot (a series of four hairpin curves of the old railroad). Since this used to be a railroad, it has a very steady average grade of around 6%, making it easy to climb up on a bike. About 2 miles from the old station platform the trail passes West Point Inn ( komoot.de/highlight/215020 ) , with snacks, picnic tables and restrooms (also offering romantic cabins with killer views across the whole bay). For more of the history see en.wikipedia.org/wiki/Mount_Tamalpais_and_Muir_Woods_Railway

Tip by

31.7 km

Old Mine Trail (lower) 🌲

Highlight (Segment) • Trail

Old Mine Trail's lower section climbs from the intersection of Dipsea, Coastal, and Dear Park Rd trails at Cardiac Hill gently to the busy Pantoll trailhead/campground/Ranger Station at the intersection of Panoramic Highway with Pantoll Road.
Old Mine Trail's upper section continues across the highway on steeper switchbacks to the Rock Springs parking at Ridgecrest Blvd parallel to the more gentle paved Pantoll Rd ( komoot.de/highlight/198543 ).
This is a section of longer tours along the ridges with more highlights and photos: komoot.de/tour/13627075

Tip by

47.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

31.7 km

6.83 km

6.46 km

2.17 km

138 m

< 100 m

Surfaces

31.3 km

8.75 km

7.13 km

219 m

Elevation

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

Weather

Today

Sunday 12 July

31°C

13°C

9 %

Additional weather tips

Max wind speed: 14.0 km/h

to get more detailed weather forecasts along your route

Comments

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Old Mine Trail (lower) 🌲 loop from Mill Valley

West Blithedale Avenue Trailhead

Old Railroad Grade Trail Gate Overlook

Railroad Grade at Fern Canyon & Summit

Old Railroad Grade: Blithedale to Gravity Car

Railroad Grade Fire Road Overlook to San Francisco

Flowy downhill section above Laguna Creek

Old Railroad Grade Trail (upper half) — Mt Tam

Old Mine Trail (lower) 🌲

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