Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax
Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax
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Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax
03:43
40.6km
1,040m
Gravel riding
Hard gravel ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels. The starting point of the route is accessible with public transport.
Last updated: April 30, 2026
Tips
Includes a segment in which cycling is not permitted
After 21.8 km for 95 m
Waypoints
Start point
Bus stop
Get Directions
12.2 km
Hoo-Koo-E-Koo Fire Road Trail
Highlight (Segment) • Trail
Tip by
15.5 km
Old Railroad Grade: Blithedale to Gravity Car
Highlight • Trail
Tip by
17.3 km
Railroad Grade Fire Road Overlook to San Francisco
Highlight • Viewpoint
Tip by
18.0 km
Flowy downhill section above Laguna Creek
Highlight • Trail
Tip by
18.3 km
Mount Tamalpais West Point
Peak
28.0 km
Rocky Ridge Road 🚵
Highlight (Segment) • Trail
Tip by
30.9 km
Bon Tempe Dam 🚵
Highlight (Segment) • Structure
For a sweet 2 hour …
Tip by
31.7 km
Alpine Lake - Bon Tempe Dam
Highlight • Lake
Tip by
40.6 km
End point
Bus stop
Way Types & Surfaces
Way Types
29.4 km
6.37 km
3.98 km
790 m
105 m
< 100 m
Surfaces
27.5 km
8.95 km
3.81 km
278 m
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Elevation
Highest point (740 m)
Lowest point (30 m)
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Weather
Powered by Foreca
Today
Sunday 12 July
30°C
14°C
14 %
Additional weather tips
Max wind speed: 13.0 km/h
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Description
If you're looking for a serious gravel biking challenge with big rewards, the Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax is definitely worth your time. This difficult route covers 25.2 miles (40.6 km) with a hefty 3422 feet (1043 metres) of elevation gain, taking around 3 hours and 43 minutes to complete. It's a perfect pick for experienced riders seeking a demanding day out on the bike, exploring some of the best Bon Tempe Dam gravel biking routes Fairfax has to offer.
What to expect on Hoo-Koo-E-Koo Fire Road Trail – Bon Tempe Dam 🚵 loop from Fairfax
This loop delivers a diverse experience, alternating between shaded creek drainages and exposed ridges, offering panoramic views of the San Francisco Bay and the Marin Peninsula. You'll navigate primarily dirt and gravel roads, but be prepared for some technical, steep sections with looser corners that might make you wish for a mountain bike. The area around Bon Tempe Dam is particularly scenic, with impressive views of both Bon Tempe Lake and Alpine Lake, often framed by Mount Tamalpais. This is a hard gravel ride requiring very good fitness, so it's best suited for experienced riders comfortable with significant elevation changes and varied Fairfax gravel biking terrain.
Planning your visit
When planning your visit, remember that much of the route is exposed, so riding on hot days requires ample water. Spring is an excellent time to go, as you'll catch the wildflowers and diverse birdlife. While the Hoo-Koo-E-Koo Fire Road Trail is generally suitable for gravel bikes, consider wider, tubeless tires (e.g., 40mm) and hydraulic braking to enhance your descending experience on some of the rougher sections. Parking is typically available in Fairfax, which serves as a convenient starting point for this challenging gravel bike loop.
Trail details
- Distance: 25.2 miles (40.6 km)
- Elevation gain: 3422 feet (1043 metres)
- Difficulty: difficult
- Estimated time: 3 hours and 43 minutes
Comments
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