Elevation: 7,355 ft. to 10,336 ft.
Length: 10.8 miles (17.4 km) One Way
Drive ±11.5 miles south from Mammoth Hot Springs, just south of the Apollinaris Spring Picnic Area.
From south the trailhead is located ±9.5 miles north of Norris Junction, 1.2 miles north of Obsidian Cliff.
A small parking area and trailhead are located along the west side of the road.
The summit of Mount Holmes can be reached via the 10.8 miles (17.4 km) Mount Holmes-Winter Creek trail. There is a ranger station near the top of Mount Holmes from which forest fires and weather are monitored. The Bannock Trail crosses the mountains close to Mount Holmes.