The best MTB trails around Nicasio
4.9
(23)
161
riders
14
rides
Last updated: October 25, 2025
5.0
(1)
7
riders
1. Marin Fire Road loop — Gary Giacomini Open Space Preserve
34.9km
03:40
970m
970m
Expert mountain bike ride. Very good fitness required. Suitable for all skill levels.
4.6
(10)
63
riders
2. Loma Alta Summit – Gestalt Haus loop from Fairfax
27.2km
02:30
670m
670m
Expert mountain bike ride. Good fitness required. Advanced riding skills necessary. Some portions of the route may require you to push your bike.
Sign up for free
9
riders
3. Jewell Trail 🌲 loop from Fairfax
19.3km
01:49
440m
440m
Intermediate mountain bike ride. Good fitness required. Suitable for all skill levels.
14
riders
4. Bolinas Ridge Trail – Gestalt Haus loop from Fairfax
53.2km
04:15
960m
960m
Expert mountain bike ride. Very good fitness required. Suitable for all skill levels.
5.0
(9)
10
riders
5. Giacomini Open Space Preserve loop from Fairfax
30.9km
03:29
980m
980m
Expert mountain bike ride. Very good fitness required. Suitable for all skill levels.
Get access to more routes and recommendations from other explorers.
Sign up for free
Already have an account?
Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
Most popular routes around Nicasio
Most popular attractions around Nicasio
Get inspired with the komoot mobile app
Explore more
Browse the best MTB trails in other regions.
Get ready to conquer new peaks
Sign up for Free