117 Trails in Boulder County, Colorado

Trail Name Difficulty Length (mi) Rating City
Rogers Pass difficulty 28.0 Winter Park
Strawberry / Doe Creek Advanced difficulty 22.0 ***** Winter Park
CR 81 To Rendezvous Expert difficulty 3.0 **** Winter Park
James Peak Intermediate difficulty 27.0 ***** Winter Park
Idlewild Trail System Advanced difficulty 10 ***** Winter Park
Blue Sky difficulty 11.0 Winter Park
WTB difficulty 10.0 Winter Park
Broken Thumb difficulty 17.0 Winter Park
Green World (Trestle Bike Park) Intermediate difficulty 7.0 ***** Winter Park
Paper Boy (Trestle Bike Park) difficulty 1 Winter Park
Spicy Chicken (Trestle Bike Park) difficulty 1 Winter Park
Colorado Hills Trail Beginner difficulty 6.0 ** Westminster
Standley Lake Beginner difficulty 5.0 *** Westminster
Sourdough Trail Intermediate difficulty 12.0 **** Ward
South Saint Vrain Advanced difficulty 10.0 **** Ward
Buchanan Pass Advanced difficulty 10.0 ***** Ward
Waldrop Trail Advanced difficulty 3.0 **** Ward
Phases difficulty 14 Tabernash
Marshall Road Open Spaces Beginner difficulty 7.0 *** Superior
High Plains Trail Beginner difficulty 4.0 *** Superior
Greenbelt Plateau Beginner difficulty 3.0 *** Superior
Dirty Bismarck Easiest difficulty 10.0 *** Superior
Coalton Trail Beginner difficulty 6.0 *** Superior
Rollins Pass Beginner difficulty 15.0 *** Rollinsville
Lion Gulch Advanced difficulty 6.0 **** Pinewood Springs
Coulson Gulch Advanced difficulty 9.0 *** Pinewood Springs
West Magnolia Intermediate difficulty 9.0 *** Nederland
Mud Lake difficulty 3.0 Nederland
Bobcat Ridge Intermediate difficulty 4.0 **** Masonville
Eden Valley Spur (Bobcat Ridge) Beginner difficulty 3.0 *** Masonville
Hall Ranch Advanced difficulty 9.0 **** Lyons
Rabbit Mountain Loop Intermediate difficulty 5.0 *** Lyons
Picture Rock Trail (Heil Valley Ranch) Intermediate difficulty 11.0 **** Lyons
Devil's Backbone Intermediate difficulty 8 **** Loveland
Round Mountain Summit Adventure Trail Expert difficulty 9.0 **** Loveland
East Crosier difficulty 8.0 Loveland
West Crosier difficulty 8.0 Loveland
Coal Creek Trail Easiest difficulty 10.0 *** Louisville
East Boulder Trail Easiest difficulty 4.0 ** Louisville
Davidson Mesa difficulty 4.0 * Louisville
Lobo Trail Easiest difficulty 18 *** Longmont to Boulder
St Vrain River Trail difficulty 23.0 Longmont
St Vrain River Trail difficulty 23.0 Longmont
Sunset Park Advanced difficulty 1.0 ** Lakewood
White Rocks Trail Beginner difficulty 7.0 *** Lafayette
Ceran Saint Vrain Loop Intermediate difficulty 5.0 *** Jamestown
Waterline Intermediate difficulty 3.0 **** Idaho Springs
Centennial Cone Park Intermediate difficulty 13.0 **** Idaho Springs
Barbour Fork Loop Intermediate difficulty 8.0 *** Idaho Springs
Warren Gulch Advanced difficulty 17.0 *** Idaho Springs

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