Routes

Planner

Features

Updates

App

Get the App

Routes

Mountain biking trails

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

Routes

Mountain biking trails

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: June 13, 2026

Tips

Cycling is not permitted along parts of this route

After 383 m for 80 m

After 2.84 km for 55 m

After 41.7 km for 94 m

After 44.0 km for 80 m

Waypoints

Start point

Bus stop

Get Directions

2.73 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

6.71 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

7.41 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

7.71 km

Mount Tamalpais West Point

Peak

17.4 km

Rocky Ridge Road 🚵

Highlight (Segment) • 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 to the top of the ridge line above Bon Tempe Lake. It affords great views in all directions from the top, particularly across Alpine and Bon Tempe Lakes below, Northern Marin, and all the way across to the San Francisco Bay in the East.
For a sweet 2 hour 🚵 mountain bike loop with 4 lakes involving this trail segment check out komoot.de/highlight/153264
To avoid this steep climb you can follow the paved Sky Oaks Road between Bon Tempe Lake and Lake Lagunitas, or hike the (no bikes allowed) Shady Side Trail along Bon Tempe Lake.
See 🚵 Tour komoot.de/tour/9817832 for highlighted segments and labeled photos

Tip by

20.3 km

Bon Tempe Dam 🚵

Highlight (Segment) • 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 mountain bike loop with 4 lakes involving this trail segment check out komoot.com/highlight/153264

See 🚵 Tour komoot.com/tour/9817832 for highlighted segments and labeled photos

Tip by

21.0 km

Alpine Lake - Bon Tempe Dam

Highlight • Lake

Great stop for a photo

Tip by

21.9 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 below Phoenix Lake to the intersection with Sky Oaks Road near Bon Tempe Dam.

Tip by

25.4 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 mt tam east peak
-Fish Grade fire road, very steep, we hiked the bikes

Tip by

44.4 km

End point

Bus stop

Way Types & Surfaces

Way Types

33.4 km

7.03 km

3.90 km

< 100 m

Surfaces

19.8 km

13.4 km

6.26 km

3.74 km

1.02 km

106 m

Elevation

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

Highest point (740 m)

Lowest point (20 m)

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

Want to know more?

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

Navigate

Send to Phone

Save

Edit route

Download GPX

Move start point

Embed on a website

Report an Issue

Report restricted access

Nearby routes

Hard

5.0

293

Fairfax Tamarancho Trails loop

01:42h

17.8km

410m

Easy

4.6

209

Beginner Loop

01:27h

14.6km

280m

Moderate

5.0

117

Mount Tamalpais & Coastal Trail loop

03:20h

35.4km

840m

Moderate

4.8

107

Old Railroad Grade and Hoo-Koo-E-Koo Loop

02:39h

24.0km

750m

Moderate

4.9

Marin Three Lakes loop

01:39h

16.8km

370m

Moderate

5.0

Miwok, Coastal, and Dias Ridge Loop

01:59h

17.6km

570m

Hard

5.0

Tennessee Valley/Muir Beach loop

03:26h

32.4km

970m

Moderate

Marincello, Bobcat, Miwok and Old Springs Loop

01:20h

11.5km

400m

Moderate

5.0

Nimitz Way loop

02:09h

26.2km

470m

Moderate

5.0

Tilden and Wildcat loop

02:30h

28.8km

600m

Moderate

5.0

Wildcat Creek & Havey Canyon Trail loop

02:06h

23.1km

580m

Moderate

Tamarancho to Cascade Fire Road loop

02:30h

23.4km

720m

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

Railroad Grade at Fern Canyon & Summit

Railroad Grade Fire Road Overlook to San Francisco

Flowy downhill section above Laguna Creek

Rocky Ridge Road 🚵

Bon Tempe Dam 🚵

Alpine Lake - Bon Tempe Dam

Shaver Grade Road

Fish Gulch trail junction

Nearby routes

Sign up or log in to keep exploring this route

We value your privacy ⛰️

We value your privacy ⛰️