El Capitan, Mountain summit in Sawtooth Wilderness, United States.

El Capitan is a 9,901-foot (3,018 m) mountain in the Sawtooth Range of central Idaho, within the Sawtooth Wilderness of Sawtooth National Recreation Area in Blaine County. It rises above the eastern end of Alice Lake, 1.9 miles east of Snowyside Peak and 1.4 miles west of McDonald Peak.

The sources document no ascent history for El Capitan; the 1935 Underhill–Williams claim is unsourced. What they do record is its setting: the 9,901-foot summit rises above the east end of Alice Lake, at 8,600 feet, reached by a moderate trail from Pettit Lake at 7,000 feet. Its line parent is Peak 10,052, 1.2 miles to the north-northwest.

The name El Capitan echoes the better-known Yosemite formation, a reference American mountaineers carried into the Sawtooth Range. The peak stands above the eastern end of Alice Lake, at 8,600 feet, reached by a moderate trail from Pettit Lake at 7,000 feet. Climbers heading for the summit pass this lake shore, where the mountain's west side rises from the water.

The usual approach is the moderate trail from Pettit Lake, which starts at about 7,000 feet (2,130 m) and climbs to Alice Lake at 8,600 feet (2,620 m) below the peak's eastern end. From the lake the summit lies above the eastern shore. Snow can linger on the upper slopes into summer, so carry water and check conditions before setting out.

El Capitan stands 1.2 miles (1.9 km) south-southeast of Peak 10,052, which is listed as its line parent, and 1.4 miles (2.3 km) west of McDonald Peak. It rises directly above the eastern end of Alice Lake, a body of water sitting at 8,600 feet (2,620 m).