The drive from Stevensville to Sarnia covers approximately 300 kilometers. The most direct route is taking the QEW to Highway 403, then merging onto Highway 401 West, and finally Highway 402 West to Sarnia. This trip typically takes about 3 hours and 30 minutes, depending on traffic. Sarnia is located at the mouth of the St. Clair River and is a major border crossing point.
Total Distance: 300 km driving distance; 260 km straight-line air distance.
The 402 is generally a smooth drive.
Summer and early autumn for the best driving conditions.