With an elevation of 10,751 feet, Thompson Peak is the highest mountain in the Sawtooth Range. There are four different routes up the mountain, the easiest of which is the class 3 South Couloir and the most difficult being the class 5.8 Northeast Face. A Sawtooth National Forest Pass is required if you'd like to park in the parking lot, and anyone who hikes or climbs the mountain will need to fill out a free self-issued wilderness permit. There are plenty of campgrounds around the trailhead, some of which require reservations, and wilderness camping is allowed on the mountain as well.

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