Routes

Planner

Features

Updates

App

Login or Signup

Get the App

Login or Signup

Login or Signup

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

04:44

53.0km

1,230m

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. 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

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

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

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

53.0 km

End point

Bus stop

Loading

Way Types & Surfaces

Way Types

25.8 km

14.1 km

6.13 km

3.79 km

3.13 km

< 100 m

Surfaces

21.9 km

17.8 km

8.40 km

3.36 km

1.43 km

212 m

Sign up to see more specific route details

Sign up for free

Elevation

Elevation

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

Highest point (680 m)

Lowest point (0 m)

Sign up to see more specific route details

Sign up for free

Weather

Powered by Foreca

Friday 10 July

24°C

10°C

-- %

Additional weather tips

Max wind speed: -- km/h

to get more detailed weather forecasts along your route

Comments

guide_signup

Want to know more?

Sign up for a free komoot account to join the conversation.

Sign up for free

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

Print

Share

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

45

Marin Three Lakes loop

01:39h

16.8km

370m

Moderate

5.0

47

Miwok, Coastal, and Dias Ridge Loop

01:59h

17.6km

570m

Hard

5.0

38

Tennessee Valley/Muir Beach loop

03:26h

32.4km

970m

Moderate

31

Marincello, Bobcat, Miwok and Old Springs Loop

01:20h

11.5km

400m

Moderate

5.0

39

Nimitz Way loop

02:09h

26.2km

470m

Moderate

5.0

24

Tilden and Wildcat loop

02:30h

28.8km

600m

Moderate

5.0

36

Wildcat Creek & Havey Canyon Trail loop

02:06h

23.1km

580m

Moderate

22

Tamarancho to Cascade Fire Road loop

02:30h

23.4km

720m

Explore
RoutesRoute plannerFeaturesHikesMTB TrailsRoad cycling routesBikepackingSitemap
B2B
PartnersConnectEmbed routes
Company
PressWhat's NewPioneersProduct UpdatesAmbassadorsAdventure HubCareers
Community
Help GuidesSupportGPX Merge ToolGPX Route VideoHazard AssessmentLive Tracking
Download the app
Follow Us on Socials

© komoot GmbH

Privacy Policy
Terms of Service
Community guidelines
Vulnerability disclosure program
Imprint
Information for law enforcement