Boulder County, Colorado
1,538 hiking trails · 16parks & campgrounds · 17 cities. Real OpenStreetMap + Recreation.gov data.
About Hiking in Boulder County, Colorado
Boulder County is home to 1,538 mapped hiking trails and 16 federal parks, campgrounds, and recreation areas spread across 17 cities. Trail data is sourced from OpenStreetMap contributors; park and campground info comes from Recreation.gov.
Looking for something specific? Search all trails in Boulder County or browse parks. Want to narrow further? Pick a city below to see only that city’s outdoor options.
Trails & Parks in Boulder County
Up to 216 pinpoints showing trail and park locations across the county.
Cities in Boulder County
Click any city to see trails and parks within it.
Sample Parks in Boulder County
Sample Trails in Boulder County
Hiking guides for Colorado
Statewide rankings and guides — useful context for Boulder County.
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.