Alum Cave Trail is a 4.6 mi trail with 1,125 ft of climbing — about 2h 5m of moving time before you stop for anything. Dogs are not allowed, and we rate it comfortable from age 9. About 60% of it is shaded, and no refill point is recorded on the route.
Underfoot & overhead bluffs
4.6 mi and 1,125 ft of climbing work out to 2h 5m of moving time — before you stop for anything. No refill is recorded on the route — you carry all of it. Informational only, not medical advice.
Get the summer refuel plan →NAISMITH · CDC · ACSM · how these numbers are worked out
In July, Great Smoky Mountains National Park runs around 87°F at the main visitor elevation. With no refill recorded on the route, everything you drink starts in your pack.
55°F · Mostly Clear · wind 5 mph
NOAA forecast for Great Smoky Mountains National Park — not for this trailhead specificallyParson Branch Road is closed due to high water & downed tree. Updated 7/29/2026
Live NPS alert for Great Smoky Mountains National Park · sourceThe park will conduct single-lane closures on the Gatlinburg Spur from July 27-30 to complete essential maintenance. Northbound lane closures are scheduled from July 27 through July 28, and southbound lane closures...
Live NPS alert for Great Smoky Mountains National Park · sourceAbout 2h 5m of moving time for 4.6 mi and 1,125 ft of climbing — that is Naismith's planning rule, so it counts walking only, with nothing for photos, lunch or the queue at the top.
Planning figures for that much moving time are 1.0–2.1 L, cool day to hot. No refill point is recorded on the route, so you carry all of it. Informational only, not medical advice.
No — Alum Cave Trail is closed to dogs. Our Great Smoky Mountains National Park dog guide lists the trails where they are welcome, plus boarding and the nearest 24/7 vet.
We rate it comfortable from age 9. It is not a stroller route. That rating is our own hand-check of length, footing and exposure, not an official NPS grade.
About 60% of the route is shaded, and Great Smoky Mountains National Park peaks around 87°F in its hottest month. The less shade a route has, the more of it you want behind you before midday.