Warm Springs, FR 185, is part of the Lewis and Clark Back Country Byway. The trail climbs from the Lemhi River Valley to Lemhi Pass. The well-maintained dirt road has steep climbs, sections of shelf road, and numerous blind curve switchbacks. Beginning in sagebrush-covered hills, the trail enters a mixed conifer forest with scattered aspens before breaking out into alpine meadows near the top.
Sharkey Hot Springs is located near the bottom of the trail. Natural springs have been routed into two soaking pools, which have vault toilets and changing rooms. There is a fee for using the springs, which can be prepaid on rec.gov.
The road crosses the Continental Divide Trail, a north/south hiking trail that spans the US. Near Lemhi Pass, there are several pullouts with informative signage, while the pass itself provides amazing views eastward into Montana and westward into Idaho. Users will find numerous other trails connected at Lemhi Pass.
There are very limited camping opportunities along this road. Look elsewhere to camp.