Pocatello to Afton: Scenic Idaho-Wyoming Road Trip Guide

This route follows US-91 and US-34 through the Caribou-Targhee National Forest, where elk outnumber people in winter. You'll climb from the Snake River Plain at 4,660 feet to the Salt River Pass at 7,628 feet, a 3,000-foot elevation gain over just 30 miles.

The drive covers about 100 miles and takes roughly 2 hours without stops, but plan for at least half a day to absorb the scenery. Start in Pocatello, known as the 'Gate City' because of its historic role as a railway hub.

The Caribou-Targhee National Forest blankets the mountains with lodgepole pine and aspen, turning golden in fall. The Salt River Range to the east offers dramatic limestone cliffs and alpine lakes accessible via short hikes.

Geologically, the area is shaped by ancient volcanic activity and glacial scouring, visible in the rounded ridges and U-shaped valleys around the pass.

• The Lava Hot Springs (5 miles off I-15 near Pocatello) are a natural attraction with year-round soaking pools.
• Cheese and dairy products from local farms, like the one at the Niter Ice Cave, are worth sampling.
• In Afton, the world's largest elk antler arch spans the main street, a symbol of the region's wildlife heritage.

Local commerce thrives on agriculture and tourism. In Soda Springs, the 'Geyser Park' erupts every hour, a man-made geothermal geyser originally drilled in 1937. The town also boasts the 'Soda Point', a Carbonated Water Fountain where you can taste naturally carbonated spring water, a quirky local tradition.

These small towns preserve a pioneer spirit, with family-run diners and motels that welcome travelers with a warm smile.

US-91 is a well-maintained two-lane highway with occasional passing lanes, while US-34 is a scenic byway through the Caribou-Targhee. Both roads are generally safe year-round, but winter tires are required from October to April due to snow and ice.

Fuel stations are sparse: the last reliable option is in Soda Springs, ID (mile 45), before Afton. Plan to fill up in Pocatello or Soda Springs, and carry extra water and snacks for the remote stretches.

• Most gas stations in Soda Springs accept credit cards; no major chains exist beyond Pocatello.
• Restrooms are available at rest areas near McCammon and at the Soda Springs visitor center.
• Cell service is spotty between McCammon and Soda Springs; download offline maps beforehand.

The route's economics are straightforward: you'll spend more on gas than on tolls, as there are no toll roads. Food costs can be kept low by packing a picnic, especially since restaurant options are limited outside Soda Springs.

For how to find the best stops and hidden gems between cities, use Wayro's guide to discover off-highway treasures.

The road is well-marked, but be alert for wildlife, especially deer and elk at dawn and dusk. Gravel shoulders are narrow in some sections, so pull off entirely when stopping.

For families, the Lava Hot Springs offer a water park and Olympic-sized pool, always a hit with kids. At the Niter Ice Cave, just north of Soda Springs, you can walk into a frozen chamber even in summer—a cool adventure for children.

• Rest areas with picnic tables are at mile 20 (near McCammon) and mile 55 (just past Soda Springs).
• The Soda Springs Visitor Center has a small playground and clean washrooms.
• For pets, the Caribou-Targhee allows dogs on trails, but keep them leashed; many motels in Afton are pet-friendly.

Fatigue management is crucial on this rural stretch. The drive is not long, but the mountain curves can be tiring. Take a break every hour, switch drivers, and stay hydrated.

The route's safety record is generally good, but conditions change fast in winter; check weather forecasts and carry chains if driving in snow. Overall, this drive is a peaceful alternative to the Interstate, offering solitude and unspoiled nature.