The approach to Reynolds Peak is best accessed by parking at the Spruces Campground 9.7 miles up Big Cottonwood Canyon. Cross the highway to the N side of the road and follow the Mill D North trail through the cabins and up the drainage. Branch to the left/W at the junction, you may or may not find a trail sign here. Work up the gully to the base of the peak, but don't go straight up the face, head to the N and work up through the trees, then traverse along the ridge to reach the summit.