Sawtooth Scenic Byway (Highway 75)
Idaho's granite spine scenic corridor
Highway 75 cuts a dramatic line through the heart of Idaho’s Sawtooth Range, where jagged granite peaks rise straight from the valley floor like broken teeth. This scenic byway runs 115 miles from Shoshone north to Stanley, passing through Sun Valley and climbing over 8,700-foot Galena Summit. The route opens up dozens of backcountry spurs including Fourth of July Creek Road, which leads to high alpine lakes beneath towering Castle Peak.
The main highway is paved and accessible to all vehicles, but the real adventure lies in the forest service roads that branch into the wilderness. High clearance is recommended for side routes, especially after snowmelt when creek crossings can be dicey. Summer through early fall offers the best conditions, though Galena Summit can see snow into June. You’ll find dispersed camping throughout the Sawtooth National Forest and some of the most spectacular mountain scenery in the Lower 48.
Trail Specs
| Difficulty | Easy |
|---|---|
| Trail Type | Scenic Drive |
| Surface | Mixed |
| Features | Camping, High Altitude, Scenic |
| Length (miles) | 115 mi / 185.1 km |
| Duration | 1 day |
| Max elevation (ft) | 8701 ft |
| Best season | June-October |
| Minimum vehicle | Any vehicle |
| Nearest town | Stanley, Idaho |
| Land manager | Sawtooth National Forest |
| Permit required | No |
| Cell service | Spotty |
| Water crossings | No |
| Dispersed camping | Yes |
| Start coordinates | |
| End coordinates | |
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| Find on Google | Search on Google → |
Location
Trail Conditions
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Frequently asked questions
Can my sedan handle the Sawtooth Scenic Byway?
Yes, any vehicle can drive Highway 75 as it's fully paved. The scenic byway itself requires no clearance or 4WD capability.
Is the Sawtooth Scenic Byway open in winter?
Highway 75 stays open year-round but expect snow and icy conditions from November through May. June through October offers the best weather and full access to side roads.
Do I need permits to drive the Sawtooth Scenic Byway?
No permits required to drive Highway 75. Some trailheads and camping areas may charge day-use or overnight fees through the Forest Service.
What's the most challenging part of this route?
The 8,701-foot Galena Summit is the highest point and can have weather changes quickly. It's still easy driving but be prepared for potential snow even in summer months.
Where can I find dispersed camping along the byway?
Abundant dispersed camping exists on Forest Service roads branching off Highway 75, especially around Stanley Lake, Redfish Lake, and the Wood River Valley. Most sites are first-come, first-served.