Hiking Trails & Parks in Boulder, Colorado
365 trails & 1 parks in Boulder, located in Boulder County, Colorado.
About Outdoor Recreation in Boulder, Colorado
Boulder offers 365 mapped hiking trails and 1 federally managed parks within the city or nearby. Located in Boulder County, Colorado, it’s a starting point for hikers, campers, and casual nature seekers.
Explore more nearby: Boulder County overview, all Boulder County trails, or statewide Colorado list.
Parks & Campgrounds in Boulder
Hiking Trails in Boulder
From the OutsideAtlas Blog
Photo: Sergei AkulichThe 10 Longest Hiking Trails in Colorado, Ranked
Colorado's longest mapped hiking trails, ranked by distance with notes on what makes each route worth the commitment.
Photo: Sergei AkulichColorado's 10 Most Punishing Trails by Elevation Gain
Steep is hard. These are the ten Colorado trails with the most total elevation gain — quad-burners earned by hard climbing.
Photo: Joshua EarleThe Best Beginner-Friendly Hikes in Colorado
Ten gentle, well-marked Colorado trails perfect for first-time hikers, families, or recovery days.
Photo: Joshua EarleThe 10 Most Challenging Hikes in Colorado
Colorado's ten hardest hikes — expert difficulty, big mileage, or serious exposure. Reserved for experienced hikers.
Photo: Joshua EarleThe Best National Parks & Recreation Areas in Colorado
Federal parks and recreation areas in Colorado ranked by what they actually offer hikers and campers, not just popularity.
Photo: Joshua EarleBest Waterfall Hikes in Colorado: 10 Trails to See Falls Up Close
Colorado's best hikes to named waterfalls — from short family-friendly viewpoints to all-day cascade chasing.