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Bothin Marsh Preserve – Hoo-Koo-E-Koo Fire Road Trail loop from Tamalpais-Homestead Valley

Bothin Marsh Preserve – Hoo-Koo-E-Koo Fire Road Trail loop from Tamalpais-Homestead Valley

Hard

2.8

(9)

riders

Bothin Marsh Preserve – Hoo-Koo-E-Koo Fire Road Trail loop from Tamalpais-Homestead Valley

02:25

32.5km

700m

Gravel riding

Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is right next to a parking lot.

Last updated: July 10, 2026

Tips

Your route passes through protected areas

Please check local regulations for:

Camino Alto Open Space Preserve

Blithedale Summit Open Space Preserve

Baltimore Canyon Open Space Preserve

Waypoints

Start point

Parking

Get Directions

709 m

Bothin Marsh Preserve

Highlight • Natural

This 106-acre preserve incorporates a 2-acre tidal wetland that’s a small reminder of the vast salt marshes that once surrounded San Francisco Bay. A quiet inlet at the north end …

Tip by

996 m

Bothin Marsh Preserve

Highlight • Natural

This tidal sanctuary runs along the Mill Valley-Sausalito Pathway and the Charles F. McGlashan Pathway. More than 400 species of migratory birds rest here after their long flights, and if …

Tip by

2.37 km

Pickleweed Inlet crossing

Highlight • Bridge

Peaceful northern end of the Baywood Park wetland with a wooden pedestrian/bike bridge.

Tip by

10.8 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

13.7 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

13.8 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 …

Tip by

15.5 km

Former Railroad and Gravity Car Station

Highlight • Historical Site

There are still remnants of old train platforms visible where the Gravity cars used to intersect with the Mt Tam Railroad.

Tip by

16.2 km

Hoo-Koo-E-Koo Fire Road Trail

Highlight (Segment) • Trail

The Hoo-Koo-E-Koo Fire Road skirts the east side of Mount Tamalpais; its winding route features stunning scenic views of San Francisco Bay and the Marin peninsula. Some say the trail …

Tip by

23.1 km

Baltimore Canyon Open Space Preserve

Nature Reserve

32.5 km

End point

Parking

Way Types & Surfaces

Way Types

14.4 km

8.65 km

8.14 km

846 m

249 m

218 m

Surfaces

16.1 km

9.32 km

6.87 km

267 m

< 100 m

Elevation

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

Highest point (360 m)

Lowest point (0 m)

Weather

Today

Wednesday 15 July

29°C

13°C

0 %

Additional weather tips

Max wind speed: 28.0 km/h

to get more detailed weather forecasts along your route

Comments

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Bothin Marsh Preserve – Hoo-Koo-E-Koo Fire Road Trail loop from Tamalpais-Homestead Valley

Bothin Marsh Preserve

Bothin Marsh Preserve

Pickleweed Inlet crossing

West Blithedale Avenue Trailhead

Old Railroad Grade Trail Gate Overlook

Railroad Grade at Fern Canyon & Summit

Former Railroad and Gravity Car Station

Hoo-Koo-E-Koo Fire Road Trail

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