Casper to Twin Falls: Road Trip Guide & Distance

How far is Casper from Twin Falls?

The distance from Casper to Twin Falls is 414 miles (666.3 km) as the crow flies. Twin Falls is located W of Casper. By car, the driving distance is approximately 496.8 miles, taking about 10h 0min. A direct flight would take roughly 1h 20min. Both are located in United States — Casper in Wyoming and Twin Falls in Idaho.

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. 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.

Coordinates come from public place data for Casper and Twin Falls. 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.