Sarnia to Waukesha: Road Trip Guide & Distance

How far is Sarnia from Waukesha?

The distance from Sarnia to Waukesha is 294.5 miles (473.9 km) as the crow flies. Waukesha is located W of Sarnia. By car, the driving distance is approximately 368.1 miles, taking about 7h 24min. A direct flight would take roughly 1h 6min. Sarnia is in Ontario, Canada, while Waukesha is in Wisconsin, United States.

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. 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 Sarnia and Waukesha. 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.