Boulder Hiking Trails

World-class trails from your doorstep

Boulder is a hiker's paradise, with over 150 miles of trails in the city's Open Space system alone. From easy strolls to challenging peak climbs, the Flatirons and surrounding foothills offer something for every ability. Here are the essential Boulder hikes.

Royal Arch Trail

Boulder's Classic Hike

3.4 miles roundtrip to a stunning natural stone arch. Challenging but rewarding, with Flatiron views throughout.

Moderate-Hard 3.4 mi

Mesa Trail

Boulder's Backbone Trail

6.8 miles connecting Chautauqua to South Boulder. The spine of Boulder's trail system, with endless connector options.

Moderate 6.8 mi

Mt. Sanitas

Boulder's Morning Workout

Steep 3-mile loop that locals use for daily training. Rocky summit with panoramic views. The valley trail is gentler.

Strenuous 3.1 mi

Chautauqua Trail

Easy Flatiron Views

1.4-mile loop at the base of the Flatirons. Perfect for families and visitors who want iconic views without major climbing.

Easy 1.4 mi

Bear Peak

Boulder's Most Challenging

8.5-mile roundtrip with 3,000+ feet of gain. Boulder's toughest accessible peak with summit scrambling required.

Very Hard 8.5 mi

Green Mountain

Peak Summit with Views

5.4-mile roundtrip to the summit of Green Mountain. Expansive views of Boulder, Denver, and the Continental Divide.

Hard 5.4 mi

South Boulder Creek Trail

Creekside Walk

Easy paved trail following South Boulder Creek. Flat, shaded, and perfect for biking, running, or strolling.

Easy 8+ mi

Walker Ranch Loop

Mountain Biking Classic

7.6-mile loop popular with mountain bikers. Technical sections, creek crossings, and Boulder Canyon views.

Hard Biking

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