Mount Hayes is the highest mountain in the eastern Alaska Range. Despite not being a fourteener, it is one of the largest peaks in the United States in terms of rise above local terrain. For example, the Northeast Face rises 8,000 feet (2,440 m) in approximately 2 miles (3.2 km). In terms of topographic prominence, Mount Hayes is number 51 in the world.
Mount Hayes was first climbed in 1941 by Bradford Washburn, Barbara Washburn, Benjamin Ferris, Sterling Hendricks, Henry Hall, and William Shand. Today's standard route is the East Ridge (Alaska Grade 2+). Mount Hayes is not frequently climbed due to its remoteness and the resulting access difficulties.