Boulder to Tri-Cities: Road Trip Guide & Distance

How far is Boulder from Tri-Cities?

The distance from Boulder to Tri-Cities is 821.9 miles (1322.7 km) as the crow flies. Tri-Cities is located NW of Boulder. By car, the driving distance is approximately 986.2 miles, taking about 19h 50min. A direct flight would take roughly 2h 9min. Both are located in United States — Boulder in Colorado and Tri-Cities in Washington.

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. 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 Tri-Cities. 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.