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Routes
Mountain biking trails
United States
California
Marin County
Mill Valley

Bon Tempe Dam 🚡 – Shaver Grade Road loop from Mill Valley

Routes
Mountain biking trails
United States
California
Marin County
Mill Valley

Bon Tempe Dam 🚡 – Shaver Grade Road loop from Mill Valley

Hard

4.9

(2847)

17,541

riders

Bon Tempe Dam 🚡 – Shaver Grade Road loop from Mill Valley

04:53

44.4km

1,470m

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: February 28, 2026

Tips

Cycling is not permitted along parts of this route

After 383Β m for 80Β m

After 2.84Β km for 55Β m

After 41.7Β km for 94Β m

After 44.0Β km for 80Β m

Waypoints

A

Start point

Bus stop

Get Directions

1

2.73Β km

Railroad Grade at Fern Canyon & Summit

Highlight β€’ 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

2

6.71Β km

Railroad Grade Fire Road Overlook to San Francisco

Highlight β€’ Viewpoint

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

Tip by

3

7.41Β km

Flowy downhill section above Laguna Creek

Highlight β€’ Trail

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

Tip by

7.71Β km

Mount Tamalpais West Point

Peak

5

17.4Β km

Rocky Ridge Road 🚡

Highlight (Segment) β€’ Trail

Great hiking and mountain biking on this gravel fire road in Mt Tamalpais watershed. It climbs first gradually and increasingly steep from the west side of the Bon Tempe Dam …

Tip by

6

20.3Β km

Bon Tempe Dam 🚡

Highlight (Segment) β€’ Structure

Great hiking and mountain bike destination in Mt Tamalpais watershed. The dam holds the waters of Bon Tempe Lake above the Alpine Lake just below.
For a sweet 2 hour …

Tip by

7

21.0Β km

Alpine Lake - Bon Tempe Dam

Highlight β€’ Lake

Great stop for a photo

Tip by

8

21.9Β km

Shaver Grade Road

Highlight (Segment) β€’ 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

9

25.4Β km

Fish Gulch trail junction

Highlight β€’ 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

B

44.4Β km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

33.4Β km

7.03Β km

3.93Β km

< 100Β m

Surfaces

19.8Β km

13.4Β km

6.26Β km

3.74Β km

1.02Β km

106Β 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 (740Β m)

Lowest point (20Β m)

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Weather

Powered by Foreca

Today

Sunday 24 May

22Β°C

11Β°C

0Β %

Additional weather tips

Max wind speed: 19.0Β km/h

to get more detailed weather forecasts along your route

Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.

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