Salmon ID to Evanston WY: Scenic Road Trip Guide

This route traces the historic Oregon Trail and the 1869 Transcontinental Railroad corridor, passing through the Caribou-Targhee National Forest and the Bear River Range. The drive covers 420 miles, typically 7–8 hours without stops.

You'll climb from 4,000 feet in Salmon to 7,000 feet at the Wyoming border, crossing the Continental Divide twice. The first crossing is at Monida Pass (6,860 ft) on I-15; the second is unnamed but just past Montpelier, ID.

Fuel up in Salmon, ID (last cheap gas for 100 miles) and plan for price jumps of 10–15% at smaller stations en route. The route takes you through Idaho Falls, Pocatello, and Soda Springs before ending in Evanston.

For a deeper dive on planning side trips, see how to find the best stops and hidden gems between cities.

Things to do between Salmon, ID and Evanston, WY include visiting the Lava Hot Springs in Lava Hot Springs (5 pools, $8), and the Soda Springs geyser (erupts every hour on the hour, free). The route crosses the Snake River Plain, a volcanic basalt plateau dotted with buttes and lava fields.

For UNESCO World Heritage Sites, Yellowstone National Park is a 2-hour detour from Idaho Falls via US-20, but the park's geothermal features are world-class. Within the park, Old Faithful is a must-see.

Local commerce thrives in small towns like Arimo and Grace, where you'll find roadside stands selling honey and huckleberry products. In Montpelier, stop at the Paris City Cemetery to see pioneer headstones.

Climatic conditions vary: summers are hot (90°F) with afternoon thunderstorms; winters are brutally cold and snowy. The best aesthetics are in October when the aspens turn golden against the sagebrush.

Most of the route follows US-20, I-15, and US-30, all well-maintained with minimal construction delays. But watch for livestock on the open range between Arimo and McCammon, and deer at dawn/dusk near Bear Lake.

Cell service is spotty from Salmon to Idaho Falls (especially in the Lost River Valley). Download offline maps before leaving.

Estimated driving time: 7–8 hours without stops. Best stops Salmon, ID to Evanston, WY include Idaho Falls' falls on the Snake River and the World Center for Birds of Prey in Boise (if you detour).

Is it worth driving Salmon, ID to Evanston, WY? Yes, for the dramatic mountain vistas and quirky small towns, but plan for long stretches with few services.

• Diesel availability: regular stations in Salmon, Idaho Falls, Pocatello, Soda Springs, Montpelier, and Evanston.
• EV charging: Superchargers in Idaho Falls and Evanston, but none in between.
• Road conditions: winter closures possible on I-15 at Monida Pass (check 511).

Rest areas are sparse; the most reliable are at Idaho Falls (exit 119) and Pocatello (exit 72). For fatigue management, plan stops every 2 hours—try the soda fountain at the historic Soda Springs Opera House for a caffeine fix.

For family, the small-town parks (e.g., in Blackfoot) and the Idaho Potato Museum in Blackfoot (adult $8, kid $5) are highlights. The Bear Lake State Park (north of Evanston) offers swimming and boating in summer.

Pet-friendly framework: most rest areas have leash-on dog runs, but the only fenced dog park is at Idaho Falls' Tautphaus Park. Watch for ticks along the grass near streams.

Infrastructure safety highlights: the stretch through Portneuf Gorge (MP 47-76 on I-15) has steep cliffs and limited shoulders; in winter chain restrictions are common. Hidden off-route spot: check out the abandoned lava tubes near Craters of the Moon National Monument (detour from Arco).