Lewiston, Idaho to Rapid City: Road Trip Guide & Distance

How far is Lewiston, Idaho from Rapid City?

The distance from Lewiston, Idaho to Rapid City is 688.8 miles (1108.5 km) as the crow flies. Rapid City is located E of Lewiston, Idaho. By car, the driving distance is approximately 826.5 miles, taking about 16h 38min. A direct flight would take roughly 1h 53min. Both are located in United States — Lewiston, Idaho in Idaho and Rapid City in South Dakota.

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 Lewiston, Idaho and Rapid City. 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.