Tennessee trails · Trillium Gap Trail
A 26.8-mile loop in Tennessee, with 3,837 ft of climbing. Reaches Grotto Falls and other pass/waterfall destinations. Managed by the National Park Service.
The climbing leans toward the final third: 44% of the ascent falls between mile 17.8 and mile 26.8. It gives back about 4,781 ft along the way, so it rolls rather than climbing steadily.

USGS 3DEP ELEVATION × ESRI WORLD IMAGERY · VERTICAL ×1.5
Trillium Gap Trail junction. About 52 min drive (21 mi) from Sevierville. 35.68025, -83.46266 · directions
On October 14, 2026 — the day this page was generated — first light reaches this trailhead at 7:13 a.m., the sun rises at 7:39 a.m. and sets at 6:59 p.m., and the last usable light fades about 7:25 p.m. (EDT) — 11 h 21 min of daylight. At about 2.7 mph plus 30 minutes per 1,000 feet of climbing, the 26.8-mile route works out to roughly 11 h 50 min of walking — more than a single day of daylight here, so plan it as an overnight or hike it in sections.