Road Trip Guide: Hamilton, MT to Lander, WY

This route follows US-93 South and US-287/191 through the Northern Rockies, crossing the Continental Divide at 7,000 feet. The drive covers roughly 440 miles, with the fastest time just under 7 hours without stops. It's a corridor of geologic drama: the Bitterroot Valley's ancient lakebed gives way to the Snake River Plain's volcanic basalt flows, then climbs into the Wind River Range's Precambrian granite.

The route passes within 30 miles of Yellowstone National Park's west entrance, but the detour adds two hours. The primary highway is US-20/US-26 through Idaho Falls, then US-287 into Wyoming. For a smoother trip, consider an overnight in Idaho Falls, a city with river falls and a riverside walk.

The Bitterroot and Lemhi ranges frame the first leg, with the Salmon River Canyon offering whitewater views. Passing through the sagebrush steppe of Idaho, volcanic buttes and craters punctuate the landscape—Craters of the Moon National Monument is a 40-mile detour from Arco. The Wind River Range's jagged peaks appear near Dubois, and the route skirts the Wind River Indian Reservation, where local Shoshone and Arapaho crafts are sold at roadside stands.

In Lander, the Museum of the American West showcases pioneer and Native American artifacts. The town's annual 4th of July rodeo is a local tradition. For artisan goods, the 8,000-acre Lander Sculpture Park features outdoor installations. If you need tips on how to find the best stops and hidden gems between cities, use local forums.

Fuel is scarce between Salmon, ID and Dubois, WY—about 180 miles—so fill up in Salmon. As of 2023, gas averages $3.50/gal in Montana, $3.60 in Idaho, and $3.30 in Wyoming; the full tank cost for a sedan is roughly $50. The route crosses the Teton Pass at 8,431 feet, which is closed in winter during storms; check conditions before departure.

• Key fuel stops: Hamilton (MT), Salmon (ID), Idaho Falls (ID), Dubois (WY), Lander (WY).
• Major chain restaurants exist in Hamilton, Idaho Falls, and Lander; smaller towns have local diners.
• Cellular coverage is spotty between Salmon and Dubois; download offline maps.

The road quality is generally good, but winter brings ice and snow, especially over Teton Pass and in the Wind River Canyon. Summer sees heavy tourist traffic near Yellowstone, so allow extra time. Carry chains from October to April. Emergency services are limited in remote stretches; a first-aid kit and extra water are essential.

Family-friendly stops include the Yellowstone Bear World in Rexburg, ID (20 minutes off I-15), with drive-through wildlife viewing. The Grizzly & Wolf Discovery Center in West Yellowstone is another option. For kids, the Idaho Falls Zoo at Tautphaus Park is small but engaging. At the end of the trip, Sinks Canyon State Park near Lander offers a nature trail and a bighorn sheep viewing area.

Fatigue management is critical on this long drive. Plan rest stops every two hours; notable rest areas include a pullout at Lost Trail Pass (MT/ID border) and the Dubois rest area. If you feel tired, stop at one of the many RV parks or motels in Salmon or Idaho Falls for a break. The route is pet-friendly, with many motels allowing pets; ensure dogs are leashed at rest areas and never left alone in vehicles.