Great Falls to Williston: Road Trip Guide & Distance

How far is Great Falls from Williston?

The distance from Great Falls to Williston is 359 miles (577.8 km) as the crow flies. Williston is located E of Great Falls. By car, the driving distance is approximately 430.9 miles, taking about 8h 40min. A direct flight would take roughly 1h 13min. Both are located in United States — Great Falls in Montana and Williston in North Dakota.

This is a solid day of driving. Be sure to take breaks every 2-3 hours to avoid driver fatigue, and plan your meals ahead of time. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility.

Coordinates come from public place data for Great Falls and Williston. The driving distance is estimated from straight-line distance with a road-factor model, so confirm the route in your navigation app. Fuel, flight, bus, and train values are planning estimates and can change by date, provider, road closures, and border rules.