116 Trails in Boulder County, Colorado

Rank Trail Name Difficulty Length (mi) Rating City
1. Apex Park Advanced difficulty 8 **** Golden
2. Heil Valley Ranch Intermediate difficulty 14.0 **** Boulder
3. Trestle Bike Park Advanced difficulty 25.0 ***** Fraser
4. Red Rocks / Dakota Ridge Advanced difficulty 6.0 **** Denver
5. Valmont Bike Park Intermediate difficulty 6.0 ***** Boulder
6. White Ranch Advanced difficulty 14.0 **** Golden
7. North Table Mountain Intermediate difficulty 10.0 *** Golden
8. Bobcat Ridge Intermediate difficulty 4.0 **** Masonville
9. Tipperary Creek Loop Intermediate difficulty 20.0 ***** Fraser
10. Hall Ranch Advanced difficulty 9.0 **** Lyons
11. Idlewild Trail System Advanced difficulty 10 ***** Winter Park
12. Centennial Cone Park Intermediate difficulty 13.0 **** Idaho Springs
13. Virginia Canyon Expert difficulty 11 ***** Idaho Springs
14. Betasso Preserve Intermediate difficulty 7.0 **** Boulder
15. Granby Ranch Bike Park Advanced difficulty 20.0 **** Granby
16. Sunset East Beginner difficulty 1.0 **** Erie
17. Walker Ranch Advanced difficulty 7.0 **** Boulder
18. Chimney Gulch Advanced difficulty 10.0 **** Golden
19. Horsetooth Mountain Park Advanced difficulty 30 **** Fort Collins
20. Creekside / Flume Loop Intermediate difficulty 5.0 **** Fraser
21. Golden Gate Canyon State Park Advanced difficulty 35.0 **** Golden
22. Blue Sky Intermediate difficulty 15.0 **** Fort Collins
23. Devil's Backbone Intermediate difficulty 8 **** Loveland
24. Sourdough Trail Intermediate difficulty 12.0 **** Ward
25. Sunset West Advanced difficulty 3 **** Erie
26. Green World (Trestle Bike Park) Intermediate difficulty 7.0 ***** Winter Park
27. Marshall Mesa Area Beginner difficulty 16.0 *** Boulder
28. Crosier Mountain Expert difficulty 10.0 *** Drake
29. Picture Rock Trail (Heil Valley Ranch) Intermediate difficulty 11.0 **** Lyons
30. Coyote Ridge Intermediate difficulty 7.0 **** Fort Collins
31. Pole Hill Intermediate difficulty 6.0 ***** Estes Park
32. Maryland Mountain Advanced difficulty 12 **** Black Hawk
33. Wapiti Trail (Heil Valley Ranch) Intermediate difficulty 5.0 **** Boulder
34. Buchanan Pass Advanced difficulty 10.0 ***** Ward
35. South Saint Vrain Advanced difficulty 10.0 **** Ward
36. West Magnolia Intermediate difficulty 9.0 *** Nederland
37. Floyd Hill Open Space Intermediate difficulty 6 ***** Evergreen
38. Boulder Valley Ranch Beginner difficulty 7 ** Boulder
39. Stillwater Pass difficulty 110.0 ***** Grand Lake
40. Rabbit Mountain Loop Intermediate difficulty 5.0 *** Lyons
41. Dirty Bismarck Easiest difficulty 10.0 *** Superior
42. Kruger Rock / Limber Pine Loop Advanced difficulty 6.0 ***** Estes Park
43. Strawberry / Doe Creek Advanced difficulty 22.0 ***** Winter Park
44. Standley Lake Beginner difficulty 5.0 *** Westminster
45. Mountain Lion Trail (Golden Gate Canyon State Park) Advanced difficulty 8.0 **** Black Hawk
46. Chapman Drive Intermediate difficulty 3.0 **** Boulder
47. Lion Gulch Advanced difficulty 6.0 **** Pinewood Springs
48. Doudy Draw Trail Beginner difficulty 4.0 *** Eldorado Springs
49. Flatirons Vista Beginner difficulty 4.0 *** Boulder
50. Northwest Passage / Tipperary / Spruce Creek / Flume Intermediate difficulty 15.0 **** Fraser

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