87.2 miles:
1 hours,
42 minutes
Seasonal route: The road is subject to closure in winter. Known as the Sawtooth Scenic Byway, SR 75 passes through dry, rolling hills and irrigated farmland, ascends past ski resorts in Ketchum and Sun Valley and winds through the heart of the Sawtooth National Recreation Area, reaching a high point at 8,701-foot-high Galena Summit.