St. Louis County, Illinois
637 hiking trails · 6parks & campgrounds · 21 cities. Real OpenStreetMap + Recreation.gov data.
About Hiking in St. Louis County, Illinois
St. Louis County is home to 637 mapped hiking trails and 6 federal parks, campgrounds, and recreation areas spread across 21 cities. Trail data is sourced from OpenStreetMap contributors; park and campground info comes from Recreation.gov.
Looking for something specific? Search all trails in St. Louis County or browse parks. Want to narrow further? Pick a city below to see only that city’s outdoor options.
Trails & Parks in St. Louis County
Up to 206 pinpoints showing trail and park locations across the county.
Cities in St. Louis County
Click any city to see trails and parks within it.
Sample Parks in St. Louis County
Sample Trails in St. Louis County
Hiking guides for Illinois
Statewide rankings and guides — useful context for St. Louis County.
Photo: Sergei AkulichThe 10 Longest Hiking Trails in Illinois, Ranked
Illinois's longest mapped hiking trails, ranked by distance with notes on what makes each route worth the commitment.
Photo: Holly MandarichIllinois's 10 Most Punishing Trails by Elevation Gain
Steep is hard. These are the ten Illinois trails with the most total elevation gain — quad-burners earned by hard climbing.
Photo: Joshua EarleThe Best Beginner-Friendly Hikes in Illinois
Ten gentle, well-marked Illinois trails perfect for first-time hikers, families, or recovery days.
Photo: Sergei AkulichThe 10 Most Challenging Hikes in Illinois
Illinois's ten hardest hikes — expert difficulty, big mileage, or serious exposure. Reserved for experienced hikers.
Photo: Joshua EarleThe Best National Parks & Recreation Areas in Illinois
Federal parks and recreation areas in Illinois ranked by what they actually offer hikers and campers, not just popularity.
Photo: Sergei AkulichBest Waterfall Hikes in Illinois: 10 Trails to See Falls Up Close
Illinois's best hikes to named waterfalls — from short family-friendly viewpoints to all-day cascade chasing.