How long is the drive?

It takes about 1 hour and 30 minutes.

No direct passenger train service exists between Windsor and Sarnia.

What is the best highway?

Highway 40 is the primary route north from the 401.

Is Sarnia near the border?

Yes, it is directly across from Port Huron, Michigan.

Bus services are limited; driving is highly recommended.

Windsor

Sarnia

Driving

Windsor to Sarnia

Updated: 26 May 2026

Sarnia is located approximately 110 kilometers north of Windsor along the shores of Lake Huron. The most direct route involves taking Highway 401 East to Highway 40 North. This drive typically takes about one hour and 30 minutes. Sarnia serves as a major border crossing point to the United States via the Blue Water Bridge. The route passes through scenic rural landscapes of Lambton County.

Total Distance: 110 km driving distance; 100 km straight-line air distance.

Fastest Way

Driving via Highway 40 is the fastest and most direct option.

Cheapest Way

Driving is the most practical and cost-effective method for this route.

Compare Windsor to Sarnia Routes

Driving

Direct

Duration

1 hour 30 mins

Avg Price

$20 - $30 in fuel

Operator

Personal Vehicle

Route

Highway 401 East to Highway 40 North.

Highway 40 is a well-maintained route that bypasses most heavy traffic.

Travel Tips

Border Traffic
Check the Blue Water Bridge wait times if you plan to cross into the USA.
Route Planning
Highway 40 is generally less congested than the 401.
Parking
Downtown Sarnia offers ample street parking near the waterfront.
Weather
Lake Huron can cause rapid weather changes; dress in layers.
Local Events
Check the Sarnia city website for summer festivals at the waterfront.