Onalaska to Thunder Bay: Road Trip Guide & Distance

How far is Onalaska from Thunder Bay?

The distance from Onalaska to Thunder Bay is 324.9 miles (522.9 km) as the crow flies. Thunder Bay is located NNE of Onalaska. By car, the driving distance is approximately 389.9 miles, taking about 7h 51min. A direct flight would take roughly 1h 9min. Onalaska is in Wisconsin, United States, while Thunder Bay is in Ontario, Canada.

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. Keep in mind this route crosses international borders. Don't forget your passport, and check current border crossing times and vehicle insurance requirements.

Coordinates come from public place data for Onalaska and Thunder Bay. 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.