Introduction
The route from Pocatello, Idaho to Riverton, Wyoming follows US-26 and US-20 through the Snake River Plain and Wind River Basin, crossing the Continental Divide at an elevation of 7,088 feet at Teton Pass.
This 340-mile journey typically takes 5.5 to 6 hours of driving time without stops, but generous 55 mph speed limits on two-lane highways encourage a leisurely pace.
| Segment | Distance (miles) | Time (approx.) |
|---|---|---|
| Pocatello to Idaho Falls | 50 | 0:50 |
| Idaho Falls to Teton Pass | 80 | 1:20 |
| Teton Pass to Alpine | 40 | 0:45 |
| Alpine to Riverton | 170 | 3:00 |
Route Logistics and Infrastructure
Gas stations are sparse between Idaho Falls and Riverton, so fill up at either Idaho Falls or Alpine; the 80-mile stretch without services is a significant planning consideration.
- Portneuf Valley begins just east of Pocatello, offering scenic views but no services until Blackfoot.
- Idaho Falls is the last major city before the mountains, with multiple fuel options at exit 118 on I-15.
- Alpine, Wyoming, at the base of the Teton Range, has a handful of small pumps and a general store.
Cell service is intermittent between Alpine and Dubois, with reliable coverage only near towns; download offline maps before departure.
The road quality is good on US-26/US-20, with recent resurfacing in Wyoming, but winter conditions can bring snowpack and icy patches, especially at Teton Pass.
For a deeper strategy on planning stops, see this how to find the best stops and hidden gems between cities.
Road Safety, Family Stops, and Fatigue Management
For families, the Idaho Falls Zoo is a 15-minute break with over 300 animals, and the Teton County Fair in Jackson (if you take a variation) offers summer activities.
Pet-friendly stops include the Teton Bench Rest Area, which has a designated dog park, and the Wind River Welcome Center in Riverton offers water and a green space.
Children will enjoy the drift boat displays in Alpine and the fossil digging sites in the Kemmerer area (a slight detour), but always supervise near cliffs at overlooks.
Climatic conditions vary dramatically: Idaho's side is arid and sagebrush-covered, while Wyoming's higher elevations bring cooler temperatures and sudden thunderstorms in summer; year-round, morning fog is common in the river valleys.
To manage fatigue, plan to stop every 2 hours at designed rest areas like the one at milepost 10 on US-26; in winter, carry extra blankets and a shovel.
Hidden off-route spots include the Sinks Canyon State Park, where the Middle Fork of the Popo Agie River disappears into a limestone cave, and the Miners Delight ghost town near Atlantic City.
Natural Landscapes and Local Commerce
This route passes the Caribou-Targhee National Forest, where you can spot elk and pronghorn, and the Palisades Reservoir, a popular summer recreation area.
The Wind River Indian Reservation, home to the Eastern Shoshone and Northern Arapaho tribes, lies south of Dubois and requires a permit for some recreational activities like fishing.
Local commerce along the route includes small ranching towns like Dubois, known for its weekly Thursday evening rodeo in summer, and the rustic 35-mile gravel stretch through the Wind River Canyon with natural thermal springs.
The only UNESCO World Heritage Site in the vicinity is Yellowstone, but it's a significant detour; instead, the petroglyph panels at the Legend Rock State Petroglyph Site near Thermopolis are federally protected and fee-free.
Continue Your Adventure
Frequently Asked Questions
What is the driving distance and time from Pocatello, ID to Riverton, WY?
The distance is approximately 340 miles, with a typical driving time of 5.5 to 6 hours without stops.
Are there any must-see natural attractions along the route?
Yes, notable natural sights include the Palisades Reservoir, Wind River Canyon, and Sinks Canyon State Park.
What challenges should drivers expect regarding fuel and cell service?
Fuel options are limited between Idaho Falls and Alpine, and cell coverage is intermittent from Alpine to Dubois, so plan ahead.
Is the route suitable for families with children?
Yes, there are family-friendly stops like the Idaho Falls Zoo and the Teton County Fair, but be mindful of safety at high-elevation viewpoints.
Are there any pet-friendly amenities?
Yes, rest areas like Teton Bench and Wind River Welcome Center have pet-friendly facilities.
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