Phoenix Lake – Fish Gulch trail junction loop from Fairfax
Phoenix Lake – Fish Gulch trail junction loop from Fairfax
4.6
(2258)
7,419
riders
Phoenix Lake – Fish Gulch trail junction loop from Fairfax
02:38
29.8km
640m
Mountain biking
Moderate mountain bike ride. Good fitness required. Suitable for all skill levels. The starting point of the route is accessible with public transport.
Last updated: June 3, 2026
Tips
Your route passes through a protected area
Please check local regulations for:
Waypoints
Start point
Bus stop
Get Directions
1.84 km
Gestalt Haus
Highlight • Restaurant
Tip by
8.70 km
Lake Lagunitas Picnic Area and Trailhead
Highlight • Rest Area
Tip by
9.97 km
Lagunitas Trail
Highlight (Segment) • Lake
Tip by
11.8 km
Eldridge Grade Fire Road 🚵
Highlight (Segment) • Trail
Tip by
21.7 km
Phoenix Lake
Highlight • Lake
Tip by
22.6 km
Fish Gulch trail junction
Highlight • Trail
-Shaver Grade, easy grade, longer, shaded and pretty
-Eldridge Grade, medium, good length and can connect you to …
Tip by
29.8 km
End point
Bus stop
Way Types & Surfaces
Way Types
15.6 km
6.53 km
3.85 km
3.53 km
214 m
Surfaces
15.2 km
10.3 km
3.31 km
574 m
240 m
< 100 m
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Elevation
Highest point (430 m)
Lowest point (0 m)
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Weather
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Today
Friday 26 June
24°C
12°C
0 %
Additional weather tips
Max wind speed: 24.0 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 mountain biking route that truly delivers on variety and challenge, the Phoenix Lake – Fish Gulch trail junction loop from Fairfax is an excellent choice. This moderate 18.5-mile (29.8 km) mountain biking route packs in 2092 feet (638 metres) of elevation gain over approximately 2 hours and 38 minutes, making it ideal for riders with good fitness seeking both a workout and beautiful scenery.
What to expect on Phoenix Lake – Fish Gulch trail junction loop from Fairfax
This loop takes you on a journey through diverse terrain, from dirt and gravel roads to technical singletrack. You'll encounter sections like the Fish Grade fire road, which is notoriously steep and may even require pushing your bike, contrasting with the blue difficulty singletrack of the Upper Fish Gulch Trail. The Shaver Grade offers an easier, longer, and beautifully shaded ride, while Eldridge Grade presents a medium difficulty challenge. Throughout the ride, you'll be treated to views of the quaint, stunningly emerald/blue Phoenix Lake, especially along Shaver Grade Road, and experience the natural beauty of the Mount Tamalpais Watershed.
Planning your visit
This route starts from Fairfax, offering convenient access to the Mount Tamalpais Watershed. Given the varied terrain and significant elevation gain, ensure you have good fitness and are prepared for both challenging climbs and enjoyable descents. While specific parking details aren't provided, planning an early start is always a good idea for popular mountain biking trails to secure a spot and enjoy cooler temperatures.
Trail details
- Distance: 18.5 miles (29.8 km)
- Elevation gain: 2092 feet (638 metres)
- Difficulty: moderate
- Estimated time: 2 hours and 38 minutes
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