St. Mary's County, Maryland
96 hiking trails · 3parks & campgrounds · 10 cities. Real OpenStreetMap + Recreation.gov data.
About Hiking in St. Mary's County, Maryland
St. Mary's County is home to 96 mapped hiking trails and 3 federal parks, campgrounds, and recreation areas spread across 10 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. Mary's County or browse parks. Want to narrow further? Pick a city below to see only that city’s outdoor options.
Trails & Parks in St. Mary's County
Up to 99 pinpoints showing trail and park locations across the county.
Cities in St. Mary's County
Click any city to see trails and parks within it.
Sample Parks in St. Mary's County
Sample Trails in St. Mary's County
Hiking guides for Maryland
Statewide rankings and guides — useful context for St. Mary's County.
Photo: Tobias MrzykThe 10 Longest Hiking Trails in Maryland, Ranked
Maryland's longest mapped hiking trails, ranked by distance with notes on what makes each route worth the commitment.
Photo: Tobias MrzykMaryland's 10 Most Punishing Trails by Elevation Gain
Steep is hard. These are the ten Maryland trails with the most total elevation gain — quad-burners earned by hard climbing.
Photo: Maddi BazzoccoThe Best Beginner-Friendly Hikes in Maryland
Ten gentle, well-marked Maryland trails perfect for first-time hikers, families, or recovery days.
Photo: Tobias MrzykThe 10 Most Challenging Hikes in Maryland
Maryland's ten hardest hikes — expert difficulty, big mileage, or serious exposure. Reserved for experienced hikers.
Photo: Diego LozanoThe Best National Parks & Recreation Areas in Maryland
Federal parks and recreation areas in Maryland ranked by what they actually offer hikers and campers, not just popularity.
Photo: Tobias MrzykBest Waterfall Hikes in Maryland: 10 Trails to See Falls Up Close
Maryland's best hikes to named waterfalls — from short family-friendly viewpoints to all-day cascade chasing.