Great Falls to Bismarck Road Trip: Plains, Badlands & Lewis & Clark Trail

Driving from Great Falls, MT to Bismarck, ND, you trace a segment of the Lewis and Clark National Historic Trail, following the Missouri River for much of the way. The route covers roughly 430 miles via US-87, MT-200, and US-83, taking about 6 hours without stops. In Lewis and Clark's day, this stretch took weeks by keelboat; today, you can do it in a morning, but the landscape remains a living museum of the American plains.

The drive transitions from the Rocky Mountain foothills near Great Falls to the rolling plains of central Montana, then into the rugged badlands of North Dakota's Little Missouri River region. Near the Montana-North Dakota border, you'll see the dramatic buttes and dry coulees of the Missouri Breaks. This is cattle country, punctuated by small towns like Malta, Glasgow, and Culbertson, where grain elevators and pickup trucks dominate the skyline.

• Natural Landscapes: Missouri River valley, prairie pothole lakes, badlands formations in Theodore Roosevelt National Park (south unit, 30 min off route)
• UNESCO World Heritage Sites: None directly on route, but the nearby Writing-on-Stone Provincial Park (Canada, about 2 hrs north) is a tentative UNESCO site with ancient petroglyphs
• Local Commerce: Fort Benton's antique shops, Malta's dinosaur museum, Williston's oil-boom eateries

Fuel and Route Economics: Gas stations are sparse east of Malta, MT, especially in the stretch from Glasgow to Williston. Fill up in Great Falls, Fort Benton, or Malta. Prices tend to be highest in rural stations; plan for around $3.60/gallon (2025 average). The roads are mostly two-lane highways with 65-70 mph speed limits, except for short four-lane sections near Williston. Cell service is intermittent; download offline maps before leaving Great Falls.

• Best fuel stops: Great Falls (multiple stations), Malta (Conoco, Exxon), Williston (numerous options)
• Avoid running below quarter tank east of Malta
• US-83 between Malta and Bismarck is well-maintained but can be narrow and winding near the Missouri River breaks

Infrastructure Safety & Road Quality: Roads are generally well-paved, but watch for wildlife—deer and antelope frequently cross US-2 and US-83, especially at dawn and dusk. Winter driving can be hazardous; check conditions via Montana 511 and North Dakota DOT. Summer brings occasional thunderstorms and hail.

Fatigue Management & Rest Zones: Long, straight stretches can induce drowsiness. Planned rest stops include: Fort Benton (riverfront park), Malta (rest area with picnic tables), Lustre (tiny community, good for a stretch), and Williston (multiple fast food options). how to find the best stops and hidden gems between cities.

• Family Suitability: Great for families who enjoy history and vast landscapes. Kids love the dinosaur exhibits in Malta (Great Plains Dinosaur Museum) and the Lewis and Clark Interpretive Center in Great Falls.
• Pet-Friendly: Most rest areas allow pets; motels in towns like Glasgow and Williston are generally pet-friendly (call ahead).
• Hidden Off-Route Spots: The Missouri Breaks near Zortman; the ghost town of Kendall west of Lewistown (30 min detour); the Fort Union Trading Post National Historic Site at the Montana-North Dakota border (10 min off route).