Great Falls MT to Buffalo WY: Epic Road Trip Guide

The route from Great Falls, Montana, to Buffalo, Wyoming, traces the Missouri River's birthplace and the ascent to the Bighorn Mountains. A little-known fact: this corridor follows part of the Bozeman Trail, a 19th-century shortcut to the goldfields that sparked Red Cloud's War. The drive covers roughly 350 miles via I-90 and US-87, taking about 5.5 hours without stops. But the journey deserves far longer.

For those wondering is it worth driving Great Falls, MT to Buffalo, WY, the answer is a resounding yes. The route transitions from Montana's high plains to Wyoming's mountain foothills, offering a condensed tour of the Northern Rockies' geology and history. The how to find the best stops and hidden gems between cities approach applies perfectly here: use satellite maps and local forums to spot trailheads and ghost towns.

Two distinct landscapes dominate: the Missouri River Breaks east of Great Falls and the Bighorn Mountains entering Wyoming. The Pompeys Pillar (28 mi east of Billings) bears William Clark's 1806 signature. On the cultural side, Little Bighorn Battlefield National Monument (65 mi east of Billings) offers deep insight into the 1876 battle.

Local commerce thrives on ranching and tourism. In Hardin, stop at the Debra's Café for the famous pickle roll-ups. Buffalo's Main Street has antique shops and art galleries. The unheralded fish (a local delicacy) appears on menus as walleye or trout.

The primary highway is I-90 east from Great Falls to Billings, then US-87 south to Buffalo. Fuel stops are plentiful in towns like Big Timber, Columbus, and Sheridan. Expect gas prices to be $0.20-0.40 higher in rural stretches. The road surface is generally excellent, with occasional construction zones in summer.

Accommodation ranges from chain motels in Billings (exit 446) to historic lodges in Buffalo (e.g., The Occidental Hotel). Booking ahead is advisable during July and August. For how long to drive Great Falls, MT to Buffalo, WY, factor in at least 7 hours with meal and photo stops.

• Best fuel stop: Crow Agency (exit 514) – often cheapest on route.
• Electric vehicle charging: Superchargers in Billings (separate exit).
• Road alerts: Check MT 511 app for construction on I-90 near Laurel.

Wildlife crossings are frequent, especially between dusk and dawn on US-87 near the Wyoming border. Deer and antelope are common; slow down in areas marked with yellow warning signs. The speed limit is 80 mph on I-90 but drops to 70 on US-87. Seatbelt use is mandatory.

For families, the Children's Museum of Montana in Great Falls and the Bozeman Trail Interpretive Center in Buffalo offer hands-on learning. Pets are welcome at most rest stops (clean-up stations available). The Wyoming Rest Area at mile 71 on I-90 has fenced pet runs.

1. Rest stop recommendation: Big Timber (exit 367) – clean, with picnic tables.
2. Fatigue tip: Take a break every 2 hours; exercise at pull-offs.
3. Hidden gem: the ghost town of Kirwin (unpaved road 20 mi off US-87) – requires high-clearance vehicle.