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Routes
Mountain biking trails
United States
California
Marin County
Tamalpais-Homestead Valley

Fish Gulch trail junction – Phoenix Lake loop from Mill Valley

Routes
Mountain biking trails
United States
California
Marin County
Tamalpais-Homestead Valley

Fish Gulch trail junction – Phoenix Lake loop from Mill Valley

Hard

3.2

(8)

46

riders

Fish Gulch trail junction – Phoenix Lake loop from Mill Valley

05:15

53.1km

1,500m

Mountain biking

Hard mountain bike ride. Very good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: July 7, 2026

Tips

Temporary access restrictions

Includes segments with temporary access restrictions.

After 39.2 km for 123 m

Customers only

Waypoints

A

Start point

Bus stop

Get Directions

1

5.42 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

2

7.22 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

3

7.93 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

8.22 km

Mount Tamalpais West Point

Peak

5

8.35 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. …

Tip by

6

20.0 km

Shaver Grade Road

Highlight (Segment) • Trail

Great hiking and mountain biking on this gravel fire road in Mt Tamalpais watershed. It climbs gradually and mostly shaded from the Natalie Coffin Green Park parking lot in Ross …

Tip by

7

24.0 km

Alpine Lake - Bon Tempe Dam

Highlight • Lake

Great stop for a photo

Tip by

8

35.8 km

Fish Gulch trail junction

Highlight • Trail

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 …

Tip by

9

36.6 km

Phoenix Lake

Highlight • Lake

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

Tip by

B

53.1 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

25.9 km

13.9 km

6.28 km

3.81 km

3.13 km

< 100 m

Surfaces

21.9 km

17.8 km

8.42 km

3.38 km

1.43 km

212 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 (690 m)

Lowest point (0 m)

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Weather

Powered by Foreca

Today

Tuesday 21 July

34°C

17°C

0 %

Additional weather tips

Max wind speed: 21.0 km/h

to get more detailed weather forecasts along your route

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