Billings to Boulder: Road Trip Guide & Distance

How far is Billings from Boulder?

The distance from Billings to Boulder is 430.7 miles (693.1 km) as the crow flies. Boulder is located SSE of Billings. By car, the driving distance is approximately 516.8 miles, taking about 10h 24min. A direct flight would take roughly 1h 22min. Both are located in United States — Billings in Montana and Boulder in Colorado.

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 Billings and Boulder. 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.