A trail from the Iron Creek trailhead and campground leads approximately 5 miles to Sawtooth Lake.The Iron Creek trailhead can be accessed from State Highway 21 via Sawtooth National Forest road 619.[1] With a surface elevation of 8,435 feet (2,571 m) above sea level, Sawtooth Lake often remains frozen into early summer.At the southern end of the lake is Mount Regan at 10,190 feet (3,110 m) in elevation.This trail gains 1,710 feet (520 m), takes 5 to 6 hours round trip, and offers great views of Alpine Lake, Alpine Peak, and the Sawtooth Valley.