Galena Summit is a high mountain pass in the western United States in central Idaho, at an elevation of 8,701 feet above sea level. The pass is located in the Boulder Mountains, in the northwest corner of Blaine County, within the Sawtooth National Recreation Area of the Sawtooth National Forest. The summit is on State Highway 75, the Sawtooth Scenic Byway, and is 29 miles northwest of Ketchum and the Sun Valley ski resort. It is the highest summit of a highway in the Northwest.