Boulder to Fort Smith: Road Trip Guide & Distance

How far is Boulder from Fort Smith?

The distance from Boulder to Fort Smith is 674.2 miles (1085.1 km) as the crow flies. Fort Smith is located ESE of Boulder. By car, the driving distance is approximately 809.1 miles, taking about 16h 17min. A direct flight would take roughly 1h 51min. Both are located in United States — Boulder in Colorado and Fort Smith in Arkansas.

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. Heading East means you'll be driving into the sunrise if you start early. Keep your windshield clean for the best visibility. For a trip of this distance, flying is significantly faster. However, driving offers the flexibility to explore stops along the way.

Coordinates come from public place data for Boulder and Fort Smith. 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.