Isle Royale to St. Thomas: Road Trip Guide & Distance

How far is Isle Royale from St. Thomas?

The distance from Isle Royale to St. Thomas is 519.8 miles (836.6 km) as the crow flies. St. Thomas is located SE of Isle Royale. By car, the driving distance is approximately 623.8 miles, taking about 12h 33min. A direct flight would take roughly 1h 33min. Isle Royale is in Michigan, United States, while St. Thomas is in Ontario, Canada.

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. 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 Isle Royale and St. Thomas. 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.