The best cycling routes in Boulder County
4.7
(189)
7,099
riders
448
rides
Last updated: October 8, 2025
4.8
(4)
211
riders
1. The Dirty Bismark loop from Bobolink Trailhead — Boulder
38.4km
03:19
400m
400m
Expert bike ride. Good fitness required. You may need to push your bike for some segments of this route.
5.0
(2)
143
riders
2. Gold Hill via Fourmile and Sunshine Canyons — Boulder
37.2km
03:27
1,040m
1,040m
Expert bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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5.0
(2)
142
riders
3. Olde Stage Road, Lefthand Canyon, and 63rd Street loop — Boulder
45.6km
02:54
480m
480m
Expert bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
116
riders
Expert bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
99
riders
5. Ward via Lefthand Canyon and Lee Hill — Boulder
60.5km
04:21
1,260m
1,260m
Expert bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
4.8
(8)
61
riders
6. Coal Creek Trail and Rock Creek Trail loop — Superior
32.3km
02:12
220m
220m
Intermediate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
79
riders
7. Chapman Drive, Flagstaff Road, and Boulder Creek Path loop — Boulder
20.0km
01:42
470m
480m
Expert bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
52
riders
8. Longmont to Boulder (LOBO) Regional Trail
43.1km
02:40
130m
130m
Intermediate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
60
riders
9. Ward via Lefthand Canyon — Boulder
53.2km
03:46
1,100m
1,100m
Expert bike ride. Very good fitness required. Mostly paved surfaces. Suitable for all skill levels.
5.0
(1)
59
riders
10. Sunshine Canyon to Fourmile Canyon loop via Poorman Hill Road — Boulder
19.2km
01:30
390m
390m
Intermediate bike ride. Good fitness required. Mostly paved surfaces. Suitable for all skill levels.
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Our route recommendations are based on thousands of hikes, rides, and runs completed by other people on komoot.
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