Oshkosh to Sarnia: Road Trip Guide & Distance

How far is Oshkosh from Sarnia?

The distance from Oshkosh to Sarnia is 315.9 miles (508.4 km) as the crow flies. Sarnia is located E of Oshkosh. By car, the driving distance is approximately 379.1 miles, taking about 7h 38min. A direct flight would take roughly 1h 8min. Oshkosh is in Wisconsin, United States, while Sarnia 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 Oshkosh and Sarnia. 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.