Pocatello to Lander: A Scenic Idaho-Wyoming Road Trip Guide

Leaving Pocatello, ID, the Portneuf River accompanies you southeast before the road climbs over the Portneuf Range—a fault-block range that rose about 10 million years ago. This drive to Lander, WY, crosses the Eastern Snake River Plain's lava fields, then ascends into the Rocky Mountains' Wind River Range, showcasing the region's varied geology.

The journey covers roughly 340 miles via I-15, US-30, and US-287, typically taking 5.5 to 6 hours of pure driving. Whether it's worth it depends on your appetite for wide-open spaces, wildlife, and small-town history—interstates give way to quiet two-lane highways through Wyoming's Basin.

For maximizing enjoyment, learn how to find the best stops and hidden gems between cities to turn a simple transfer into a memorable adventure.

The fastest path uses I-15 north to Idaho Falls, then US-26 east through Blackfoot and onto US-26/US-287 at Jackson, but the traditional and more scenic route follows US-20 and US-26 all the way, passing through Idaho Falls, Arco, and Dubois before Lander.

Fuel stations cluster in Pocatello, Idaho Falls, Arco (last station for over 100 miles), Dubois, and Lander. Expect prices to rise 10–15% in remote areas. There is a 55-mile stretch without services between Arco and Dubois, so plan accordingly.

Budget for $35–45 in gas for an average car, plus $10–15 for meals if you opt for small-town cafes. No tolls exist on this route, and all roads are well-maintained year-round, though winter conditions can alter travel times.

Cell coverage is patchy between Idaho Falls and Dubois; download offline maps. The route crosses a portion of the Oregon Trail west of Lander, a historical landmark with interpretive signs.

For remote travel, consider extra water, snacks, and a paper map as a backup.

The route is generally safe, but watch out for wildlife, especially deer and elk, particularly at dawn and dusk between Arco and Dubois. Roads are two-lane with moderate traffic, so allow for slower speeds behind RVs and trucks.

Rest areas exist near Idaho Falls and just west of Dubois; the latter has shaded picnic tables. Plan stops every two hours to combat fatigue.

Families will enjoy the hands-on exhibits at the Idaho Falls Science Center, and the dino museum in Lander (Sinks Canyon State Park) offers easy trails to view bighorn sheep. Pets are allowed at most roadside stops but must be leashed in parks.

Hidden gem: the 312-foot-long Bighorn Sheep interpretive trail at Whiskey Mountain near Dubois—best in early summer.

The drive showcases three distinct ecosystems: the sagebrush steppe of the Snake River Plain, the volcanic moonscape of Craters of the Moon National Monument (visible from the road just east of Arco), and the alpine beauty of the Wind River Range near Dubois.

At Craters of the Moon, wander through lava tubes and cinder cones—a preserved landscape of a 15,000-year-old eruption. Nearby, the Idaho National Laboratory offers a glimpse into nuclear energy research, but is not open to the public.

Small towns along the way, like Arco, have quirky claims to fame: Arco was the first town in the world lit by nuclear power in 1955, and a local cafe serves hearty Western fare complete with homemade pies.

In Lander, the Museum of the American West and the local shops offer a dive into the area's ranching and railroad heritage.