Best Trail Running Trails Near Boulder, CO, United States

Upgrade to Pro

Unlimited access to National Geographic TOPO! & Trails Illustrated Maps

Learn More »
Displaying trails 1 - 25 of 50 in total
  1. Picture of Royal Arch Trail 1

    Royal Arch Trail

    Boulder, CO

    Hard: 3.2 mi / 2.5 hrs
    Activities:
    Hiking
    Walking
    Trail Running
    Equestrian
    Mountain Biking
  2. Picture of Dakota Ridge and Red Rocks Trail Loop 2

    Dakota Ridge and Red Rocks Trail Loop

    Morrison, CO

    Easy: 6.5 mi / 2 hrs
    Activities:
    Hiking
    Walking
    Trail Running
    Equestrian
    Mountain Biking
  3. Picture of Chautauqua Park: First Flatiron Trail 3

    Chautauqua Park: First Flatiron Trail

    Boulder, CO

    Hard: 4.7 mi / 2 hrs
    Activities:
    Hiking
    Trail Running
  4. Picture of Mesa Trail 4

    Mesa Trail

    Boulder, CO

    Moderate: 13.4 mi / 5 hrs
    Activities:
    Hiking
    Walking
    Trail Running
    Fishing
    Equestrian
  5. Picture of Mount Falcon Castle Trail 5

    Mount Falcon Castle Trail

    Morrison, CO

    Moderate: 5.82 mi / 3 hrs
    Activities:
    Hiking
    Walking
    Trail Running
    Mountain Biking
  6. Picture of East Longs Peak Trail 6

    East Longs Peak Trail

    Estes Park, CO

    Very Hard: 8 mi / 9 hrs
    Activities:
    Hiking
    Walking
    Trail Running
    Rock Climbing
    Camping
    Nature Walks
    +

    More Activities

    Activities:
    Bird Watching
    Fly Fishing
    Skiing
    Snowboarding
    Snowshoeing
    Ice Climbing
  7. Picture of Apex Gulch Loop 7

    Apex Gulch Loop

    Golden, CO

    Hard: 4.2 mi
    Activities:
    Hiking
    Trail Running
    Mountain Biking
  8. Picture of Mount Falcon 8

    Mount Falcon

    Indian Hills, CO

    Easy: 1.3 mi / 0.5 hr
    Activities:
    Hiking
    Trail Running
    Equestrian
    Mountain Biking
  9. Picture of Devil's Backbone Nature Trail 9

    Devil's Backbone Nature Trail

    Loveland, CO

    Easy: 2.7 mi / 3 hrs
    Activities:
    Hiking
    Walking
    Trail Running
    Mountain Biking
  10. Picture of Green Mountain Loop 10

    Green Mountain Loop

    Boulder, CO

    Hard: 6.2 mi / 4 hrs
    Activities:
    Hiking
    Trail Running
  11. Picture of White Ranch 11

    White Ranch

    Golden, CO

    Hard: 10.4 mi / 2 hrs
    Activities:
    Hiking
    Trail Running
    Nature Walks
    Equestrian
    Mountain Biking
  12. Picture of Bear Creek Lake Trail Loop 12

    Bear Creek Lake Trail Loop

    Morrison, CO

    Easy: 8 mi / 2.5 hrs
    Activities:
    Hiking
    Trail Running
    Camping
    Fishing
    Fly Fishing
    Equestrian
    +

    More Activities

    Activities:
    Road Biking
    Mountain Biking
    Canoeing
  13. Picture of Devils Thumb Lake Trail 13

    Devils Thumb Lake Trail

    Nederland, CO

    Moderate: 10.9 mi
    Activities:
    Hiking
    Trail Running
    Fly Fishing
  14. Picture of Elk Meadows and Bergen Peak 14

    Elk Meadows and Bergen Peak

    Evergreen, CO

    Hard: 11.3 mi / 3 hrs
    Activities:
    Hiking
    Trail Running
    Mountain Biking
  15. Picture of Hayden / Green Mountain 15

    Hayden / Green Mountain

    Golden, CO

    Easy: 7 mi
    Activities:
    Hiking
    Walking
    Trail Running
    Mountain Biking
  16. Picture of Mount Sanitas / Dakota Ridge 16

    Mount Sanitas / Dakota Ridge

    Boulder, CO

    Hard: 3.2 mi / 1 hr
    Activities:
    Hiking
    Trail Running
  17. Picture of South Table Mountain 17

    South Table Mountain

    Golden, CO

    N/A: 9.7 mi
    Activities:
    Hiking
    Trail Running
    Mountain Biking
  18. Picture of Centennial Cone Trail 18

    Centennial Cone Trail

    Golden, CO

    Moderate: 16 mi
    Activities:
    Hiking
    Trail Running
    Equestrian
    Mountain Biking
  19. Picture of Waterton Wayfarer 19

    Waterton Wayfarer

    Denver, CO

    N/A: 6.2 mi / 2 hrs
    Activities:
    Hiking
    Walking
    Trail Running
    Fishing
    Fly Fishing
    Mountain Biking
  20. Picture of Apex Park - Enchanted Forest 20

    Apex Park - Enchanted Forest

    Golden, CO

    Moderate: 7 mi / 2 hrs
    Activities:
    Hiking
    Trail Running
    Nature Walks
    Bird Watching
    Equestrian
    Mountain Biking
    +

    More Activities

    Activities:
    Cross-Country Skiing
    Snowshoeing
  21. Picture of White Rocks Section of the East Boulder Trail 21

    White Rocks Section of the East Boulder Trail

    Boulder, CO

    Easy: 4.4 mi / 0.75 hr
    Activities:
    Hiking
    Trail Running
    Equestrian
    Mountain Biking
  22. Picture of Bluff Lake Nature Center 22

    Bluff Lake Nature Center

    Denver, CO

    Easy: 1 mi
    Activities:
    Walking
    Trail Running
    Nature Walks
    Bird Watching
  23. Picture of Rabbit Mountain 23

    Rabbit Mountain

    Longmont, CO

    Moderate: 5.6 mi
    Activities:
    Trail Running
    Mountain Biking
  24. Picture of Golden Gate Canyon Loop 24

    Golden Gate Canyon Loop

    Golden, CO

    Moderate: 8.1 mi / 2 hrs
    Activities:
    Hiking
    Trail Running
    Camping
  25. Picture of Anne U. White Trail 25

    Anne U. White Trail

    Boulder, CO

    Easy: 3.3 mi / 0.75 hr
    Activities:
    Hiking
    Trail Running
Support