Thunder Swamp Trail
~2 days · 18.4 mi · easy · Loop
Quick facts
What the Thunder Swamp Trail is known for
The 18-mile main loop of the Thunder Swamp Trail System in Delaware State Forest, a rocky Poconos ramble through swamps, wetlands and mixed forest (the Stillwater spur adds more miles if wanted).
Elevation profile
Elevation ranges from 3,110 ft to 4,554 ft over 18.4 mi. Measured from OSM geometry (approximate).
- Uphill 7.3 mi · 40%
- Downhill 6.8 mi · 37%
- Flat 4.2 mi · 23%
Ridgefold breaks every route into uphill, downhill, and flat — see the full per-day breakdown in the app.
How hard is the Thunder Swamp Trail?
On the Ridgefold Difficulty Index, the Thunder Swamp Trail scores 9/100, a relative rating across the 569 trails we've mapped, blending distance, elevation gain, and steepness. It is a comparison within our set, not an official rating.
Frequently asked questions
How many days does the Thunder Swamp Trail take?
Most backpackers hike the Thunder Swamp Trail in about 2 days (1 nights out) over its 18.4 miles, though pace varies with fitness and conditions.
How much elevation gain is on the Thunder Swamp Trail?
The Thunder Swamp Trail climbs roughly 1,224 ft total — about 67 ft per mile, topping out near 1,391 ft.
Related trails
Sources & attribution
Route geometry and stats derived from OpenStreetMap (© OpenStreetMap contributors, ODbL) — source relation. Stats are approximate and may differ from official surveys; permit rules and conditions change — verify with the managing authority before your trip. Last reviewed July 2026.