Take Route south of Bridgeport for half a mile, then turn left at Jack Sawyer Road and follow the dirt road for about one mile. The hot springs flow over a waterfall big enough to stand beneath. Stay on site in one of the rustic cabins or in a renovated train caboose, or camp out at the tent site. From your seat in one of several pools, you can look out over a vast, arid landscape with the Eastern Sierras in the distance. Route 12 over the scenic Lolo Pass and into Idaho. View this post on Instagram. Cross the border into the Canadian Rockies for the unique experience of floating in hot springs that circulate through a horseshoe-shaped cave. Even though these springs are located just a short detour off of the main highway, they still feel secluded and serene.