If you've already worked your way through the Maryland day-hike checklist, this is the list for what comes next. We ranked the state's hardest trails using a composite of difficulty tag (hard or expert), distance, and elevation gain, drawing from the 13,391 mapped Maryland trails in our database. These ten routes are reserved for hikers with the gear, the navigation skills, and the honesty about their own limits to tackle them safely.
Maryland packs coastal plain, Piedmont, Blue Ridge, and Appalachian ridge-and-valley into a narrow east-west swath. The 41-mile AT segment crosses South Mountain. A full Maryland AT push (43 mi) in a long weekend is the state's most popular endurance objective. Copperheads and rattlesnakes in the mountains, ticks statewide, and serious humidity-driven heat exhaustion in July-August.
Our rankings here are data-driven — pulled from the 13,391 mapped entries OutsideAtlas tracks in Maryland — but the data has limits worth being honest about. A composite score weights expert and hard difficulty tags alongside total mileage and elevation gain. The result favors long, vertically aggressive routes with documented technical sections — there are surely tougher off-trail objectives in the state, but those are outside the scope of a trail directory.
The Ranking
Ranked from #1 to #10. Click through any entry for the full trail page — map, elevation profile, weather forecast, and direct OpenStreetMap source link.
#1. Betty's Rock Bushwhack
Betty's Rock Bushwhack sits near Syria in Madison County and is rated expert — our pick for the toughest trail on the list. Expect ground surface on a expert-only grade. Local trail-association reports tend to agree this is one of the better-maintained options in the area, which matters more on a hike of this length than on a quick walk. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Betty's Rock Bushwhack trail page →Map, elevation profile, current weather, and OSM source.#2. Double Oak Road Trail
Double Oak Road Trail sits near Port Republic in Calvert County and is rated expert — the #2 entry in a roster of hikes you don't take lightly. Expect ground surface on a expert-only grade. The route is well documented in OpenStreetMap, which is what put it on our radar — community-mapped routes tend to be the ones that get hiked enough to stay open. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Double Oak Road Trail trail page →Map, elevation profile, current weather, and OSM source.#3. Green Heron Trail
Green Heron Trail sits near Owings Mills in Baltimore County and is rated expert — the #3 entry in a roster of hikes you don't take lightly. Expect grass surface on a expert-only grade. It earns its ranking on the data, but trail conditions can change quickly after storms or fire seasons, so verify before you commit a full day. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Green Heron Trail trail page →Map, elevation profile, current weather, and OSM source.#4. Gunpowder Falls Trail
Gunpowder Falls Trail sits near Upper Falls in Baltimore County and is rated expert — the #4 entry in a roster of hikes you don't take lightly. Tagged expert in OpenStreetMap. Compared to similar trails in Maryland, this route trades difficulty for either solitude or scenery — sometimes both. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Gunpowder Falls Trail trail page →Map, elevation profile, current weather, and OSM source.#5. Gunpowder Falls Trail
Gunpowder Falls Trail sits near Perry Hall in Baltimore County and is rated expert — the #5 entry in a roster of hikes you don't take lightly. Expect unpaved surface on a expert-only grade. What makes this one earn its spot on the list is the combination of mapped detail and the kind of through-and-through experience that justifies a longer drive. A paved surface makes this one of the more accessible options on the list — good for strollers, mobility aids, and wet-weather days. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Gunpowder Falls Trail trail page →Map, elevation profile, current weather, and OSM source.#6. Haystack Meadows bushwhack route
Haystack Meadows bushwhack route sits near Dryfork in Pendleton County and is rated expert — the #6 entry in a roster of hikes you don't take lightly. Tagged expert in OpenStreetMap. Local trail-association reports tend to agree this is one of the better-maintained options in the area, which matters more on a hike of this length than on a quick walk. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Haystack Meadows bushwhack route trail page →Map, elevation profile, current weather, and OSM source.#7. Haystack Meadows bushwhack route
Haystack Meadows bushwhack route sits near Dryfork in Pendleton County and is rated expert — the #7 entry in a roster of hikes you don't take lightly. Tagged expert in OpenStreetMap. The route is well documented in OpenStreetMap, which is what put it on our radar — community-mapped routes tend to be the ones that get hiked enough to stay open. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Haystack Meadows bushwhack route trail page →Map, elevation profile, current weather, and OSM source.#8. Marsh Trail
Marsh Trail sits near Perry Hall in Baltimore County and is rated expert — the #8 entry in a roster of hikes you don't take lightly. Expect dirt surface on a expert-only grade. It earns its ranking on the data, but trail conditions can change quickly after storms or fire seasons, so verify before you commit a full day. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Marsh Trail trail page →Map, elevation profile, current weather, and OSM source.#9. Marsh Trail
Marsh Trail sits near Perry Hall in Baltimore County and is rated expert — the #9 entry in a roster of hikes you don't take lightly. Expect dirt surface on a expert-only grade. Compared to similar trails in Maryland, this route trades difficulty for either solitude or scenery — sometimes both. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Marsh Trail trail page →Map, elevation profile, current weather, and OSM source.#10. Massanutten Trail
Massanutten Trail sits near New Market in Shenandoah County and is rated expert — the #10 entry in a roster of hikes you don't take lightly. Expect ground surface on a expert-only grade. What makes this one earn its spot on the list is the combination of mapped detail and the kind of through-and-through experience that justifies a longer drive. The natural-surface tread can get slick after rain and muddy in spring — pick a dry weather window if you have the flexibility. Best attempted by hikers comfortable with long days, route-finding when the path gets faint, and weather that can turn fast. Not a casual outing. See full trail details, map, and current weather on OutsideAtlas for the most current information.
Open the Massanutten Trail trail page →Map, elevation profile, current weather, and OSM source.Planning your Maryland trip
A few pieces of context are worth keeping in mind specifically for Maryland. Spring and fall are prime; summer humidity is significant; winter ice is common in the western highlands. Copperheads and rattlesnakes in the mountains, ticks statewide, and serious humidity-driven heat exhaustion in July-August.
Always cross-reference the official land-manager page before driving out — closures, fire restrictions, and seasonal road access can change quickly. Our trail pages link directly back to the OpenStreetMap source so you can see the tags we're working from.
If you're new to hiking generally, our beginner's guide covers footwear, layering, and the day-pack basics. For safety planning on bigger objectives, the ten essentials guide is worth twenty minutes of reading.
More Maryland hiking guides
If you found this useful, the rest of our Maryland coverage continues below.
- Top 10 longest trails in Maryland — Multi-day routes and through-hikes ranked by distance.
- Steepest trails in Maryland — Hikes with the most elevation gain in the state.
- Best beginner hikes in Maryland — Easy, well-marked trails for first-time hikers.
- Best national parks in Maryland — Federal parks and recreation areas ranked.
- Best waterfall hikes in Maryland — Trails leading to named falls, ranked by accessibility.
- Best dog-friendly hikes in Maryland — Where leashed dogs are explicitly welcome.
- Best family hikes in Maryland — Short, easy trails sized for kids and grandparents.
Rankings like this are starting points, not verdicts. Trail conditions change, new routes get tagged, and what was the toughest trail in Maryland last year might not be next year. We refresh these articles when the underlying data shifts meaningfully.
Got a correction, a route we missed, or a question? Drop us a note via the contact page. We read every email and we'd rather hear it from you than miss it.
