Boulder to Great Falls: Road Trip Guide & Distance
How far is Boulder from Great Falls?
The distance from Boulder to Great Falls is 597.9 miles (962.3 km) as the crow flies. Great Falls is located NNW of Boulder. By car, the driving distance is approximately 717.6 miles, taking about 14h 26min. A direct flight would take roughly 1h 42min. Both are located in United States — Boulder in Colorado and Great Falls in Montana.
This is a serious multi-day road trip! We strongly recommend breaking this journey up with an overnight stay to ensure you arrive safely and refreshed. Since you'll be heading mostly West, pack a good pair of sunglasses if you plan to drive during the late afternoon to avoid the harsh sun glare.
Coordinates come from public place data for Boulder and Great Falls. 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.
How to Get from Boulder to Great Falls
Suggested Stops Between Boulder & Great Falls
- 191 mi
- 2367 mi
Quick Facts
Did You Know?
- At walking speed (3 mph), it would take about 199 hours of non-stop walking
- By bicycle at 12 mph, the journey would take roughly 50 hours
- You could travel this distance about 41.6 times to circle the Earth's equator