Salmon ID to Pinedale WY: Scenic Route Guide

In 1805, the Lewis and Clark Expedition faced the impenetrable Salmon River, dubbing it the 'River of No Return'—a fitting name for the rugged start of this 350-mile journey to Pinedale, Wyoming. The route weaves through the Salmon-Challis National Forest, crosses the Continental Divide at 8,046-foot Monida Pass, and ends in the Wind River Range's shadow. Along the way, you'll pass old mining towns, lava fields, and the Continental Divide Trail, making it a drive rich in natural and human history.

The drive typically takes 6 to 7 hours without stops, but with the region's attractions, plan for a full day. This guide covers how long it takes, whether it's worth it, and the best stops between the two towns, ensuring you don't miss the area's hidden gems. For more on finding these, check our article on how to find the best stops and hidden gems between cities.

The landscape shifts from the Salmon River's sheer canyons to the sagebrush steppe of the Upper Snake River Plain, then to the volcanic badlands of Craters of the Moon (a UNESCO World Heritage Site candidate, though not yet designated). The nearby Yellowstone and Grand Teton National Parks are UNESCO World Heritage Sites, but a short detour from Ashton offers a glimpse of the Teton Range without entering the parks. The route passes through the historic mining town of Cobalt, now a ghost town, where you can see old cyanide vats used in gold processing.

Local commerce thrives on agriculture and tourism. In Dubois, browse the Birch Creek Ranch for local honey, and in Ashton, visit the Idaho Potato Museum (open May-September) to see the world's largest potato. Pinedale's Main Street has the Wind River Brewing Company, a spot to try local brews, and the Museum of the Mountain Man, which details the fur trade era. Farmers' markets operate in Ashton and Pinedale on Saturdays during summer, offering fresh produce and handmade crafts.

For outdoor enthusiasts, the route crosses the Continental Divide Trail; a short hike from Monida Pass reveals clear views of the Centennial Mountains. The Teton Scenic Byway (ID-33) offers numerous pullouts for photography, especially in autumn when the aspens turn gold.

You'll primarily follow US-93 south from Salmon to Spar Canyon, then take ID-33 east across the Teton Pass into Wyoming, merging onto US-191 south to Pinedale. This is a two-lane highway with occasional passing lanes; road quality is generally good but watch for frost heaves in spring and wildlife at dusk. Fuel is scarce between towns, so top off in Salmon, Dubois, or Ashton—the latter offers the lowest regular gas prices, typically 10-15 cents cheaper than in Pinedale.

As of 2025, the total fuel cost for a mid-size SUV averaging 25 mpg is roughly $45, based on $3.50 per gallon. There are no tolls on this route. For electric vehicles, charging stations are sparse; expect Level 2 charges only in Salmon, Dubois, and Pinedale. Cellular coverage is intermittent, especially between Dubois and Ashton, so download offline maps.

Idaho's speed limit is 70 mph on most rural highways, while Wyoming's is 65 mph. Construction delays are possible in summer, so check Idaho 511 and Wyoming 511 before departing. Restrooms are available at national forest visitor centers and service stations, but plan stops for lunch at one of the few diners along the way.

Road infrastructure is reliable, but snow can close Monida Pass from October to May; always carry chains. Summer thunderstorms bring hail and sudden rain, especially near the Tetons. Wildlife (elk, deer, moose) are active at dawn and dusk; use high beams when safe and slow down in posted areas.

For families, the official Craters of the Moon National Monument offers a 7-mile drive on Loop Road with caves to explore—perfect for kids. In Ashton, the Ashton Dam's Picnic Area has a playground and fishing access. For a quick stop, the Dubois City Park features a pioneer-themed play structure. Numerous rest areas with restrooms and picnic tables are located at Monida Pass, the Teton Scenic Overlook, and the Green River Lakes turnoff near Pinedale.

Pets are welcome at national forest lands, but not inside Craters of the Moon's visitor center or caves. Several motels, such as the Stagecoach Inn in Salmon and the Best Western Pinedale Inn, allow pets for a nominal fee. For fatigue management, take a break every two hours; the route offers scenic pullouts but few services. Plan for coffee at the Mouse House in Dubois (known for its giant mouse collection) or a microbrew at the Bitterroot Brewing in Darby before starting the ascent.

Hidden off-route spots include the Big Hole Battlefield (detour west from Wisdom, MT, but not on the direct route), the Gilmore Ghost Town (off ID-38 near Leadore), and the Green River Lakes (30 miles north of Pinedale—a short drive to a stunning alpine setting). If you have an extra hour, take the gravel road to the Bannack Ghost Town, though it's off-route. These spots reward the adventurous with solitude.