Doublesprings

Doublesprings Road (FR 116) is a gravel backroad that winds through the wild and scenic terrain of Custer County, Idaho. Starting about 22 miles north of Mackay off US-93, it climbs steadily between the Lost River and Lemhi ranges, topping out at Doublespring Pass, a wide saddle offering sweeping views of Idaho’s highest peaks, including Borah, Leatherman, and Breitenbach.

This easy, graded road is more than just a scenic drive. Just a few miles in, travelers pass the Mount Borah earthquake site, where interpretive signs detail the dramatic 1983 quake and visible fault scarp. It’s also a launch point for offroad exploration into the spectacular Upper Pahsimeroi and West Fork Pahsimeroi Valleys, with river canyons and remote trails that feel worlds away.

Wildflowers, wildlife, and the quiet hum of high-country solitude make this drive especially rewarding in summer and fall. While there are no developed campgrounds, dispersed camping is available along wide pull-offs and side tracks.

Best traveled between late spring and fall, Doublesprings Road offers a blend of geological wonder, mountain views, and backcountry access that captures the rugged soul of central Idaho.