Trail Creek Hot Springs: access, fee and temperature
Trail Creek Hot Springs is one of the shortest approaches on this list: a steep but brief 0.1-mile scramble off Warm Lake Road east of Cascade leads to two pools, one of them fitted with a valve that lets bathers mix in cold creek water by hand. It's free, open most of the year, and one of the roadside-adjacent stops in our hot springs in Idaho guide.
Fact box
| Field | Detail |
|---|---|
| Nearest town | Cascade, Idaho (about 19 miles west) |
| Access | Short scramble, 0.1 mile, steep, from a pullout on Warm Lake Road |
| Fee | None |
| Legal status | Public, Boise National Forest |
| Season | Accessible most of the year; Warm Lake Road stays paved and largely open outside heavy snow |
| Temperature (source, historical) | The NOAA/NCEI thermal springs archive lists Trail Creek at 122°F (historical estimate, base year 1980) |
| Temperature (pools, recent) | The upper pool's source runs around 125°F per current trail reports, mixed down to roughly 100–110°F with a manual valve; the lower pool runs cooler and shifts with creek level |
Getting there
A pullout on Warm Lake Road about 19 miles east of Cascade marks the start of a short, steep scramble down to the creek, roughly 0.1 mile but steep enough to need care on the way back up. Unlike the multi-mile hikes elsewhere on this list, Trail Creek is close enough to the road that it works well as a quick stop rather than a planned outing. There's no fee, no facilities and no maintained trail, just an informal path down the bank.
The pools
Two pools sit on the riverbank at different points in the system. The upper pool is fed from a source estimated at 122°F by the NOAA archive, with current trail reports putting it closer to 125°F; a valve lets visitors add cold creek water by hand to bring it down to a comfortable 100–110°F. The lower pool, built from rock and sand, runs warm rather than hot on its own and varies more with how high the creek is running, cooler during spring runoff and warmer once flows drop later in the season.
How this guide was researched
This page draws on U.S. Forest Service recreation information for the Boise National Forest, the NOAA/NCEI thermal springs archive, and published trail reports. We haven't visited this site ourselves. Road and trail conditions change with the season; verify current status with the ranger district before you go. Last checked August 2026.
FAQ
Is Trail Creek Hot Springs a long hike?
No. It's a short, steep scramble of about 0.1 mile from a pullout on Warm Lake Road, closer to a creek-bank climb than a hike.
Is Trail Creek Hot Springs free?
Yes, with no fee or permit required.
How hot is Trail Creek Hot Springs?
The source runs around 122–125°F. A valve at the upper pool lets visitors mix in cold creek water to bring it down to roughly 100–110°F; the lower pool runs cooler on its own.
Can you visit Trail Creek Hot Springs in winter?
Often yes. Warm Lake Road stays paved and largely open outside heavy snow years, though conditions should be checked before a winter trip.
Are there facilities at Trail Creek Hot Springs?
No. It's an undeveloped pullout with no restroom, changing area or maintained trail.
We haven't visited these places ourselves, and every page says so rather than implying otherwise. Details are compiled from public land-manager, USGS and NOAA sources and cross-checked where possible; conditions, access rules and fees change without notice, so confirm with the managing agency before you go. Page last checked August 2026. Read our full methodology.