Boulder to North Cascades: Road Trip Guide & Distance

How far is Boulder from North Cascades?

The distance from Boulder to North Cascades is 992.7 miles (1597.6 km) as the crow flies. North Cascades is located NW of Boulder. By car, the driving distance is approximately 1191.2 miles, taking about 23h 58min. A direct flight would take roughly 2h 30min. Both are located in United States — Boulder in Colorado and North Cascades 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 North Cascades. 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.