Driving
St. Stephen to Sarnia
Updated: 26 May 2026
Sarnia, located at the mouth of the St. Clair River, is best reached from St. Stephen by driving across the Trans-Canada Highway. The journey takes you through Quebec and Ontario, ending at the US border crossing. This is a long-distance drive suitable for those who enjoy scenic road trips. Plan for multiple days of driving to cover the distance comfortably.
Total Distance: Driving distance is 1,750 km; straight-line air distance is 1,400 km.
Fastest Way
Driving via the Trans-Canada Highway and Hwy 401/402 is the fastest route.
Cheapest Way
Driving your own vehicle is the most economical way to reach Sarnia.
Compare St. Stephen to Sarnia Routes
Driving
Direct
Duration
19 hours
Avg Price
$350 - $550
Operator
Personal Vehicle
Route
Trans-Canada Highway (Hwy 401 to Hwy 402)
The 402 highway is the main route into Sarnia from London.
Travel Tips
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TrafficAvoid driving through Toronto during peak morning and evening hours.
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Rest StopsUse the ONroute service centers along the 401 for breaks.
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AccommodationBook hotels in advance if traveling during summer weekends.
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BorderSarnia is a major border crossing; have ID ready.
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Local FoodTry the local restaurants along the waterfront.
Safety Tips
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Highway SafetyStay alert on the busy 401 and 402 highways.
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FatigueTake regular breaks to stay refreshed.
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WeatherCheck for winter storm warnings if traveling in the off-season.
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EmergencyKeep a roadside assistance plan active.
People Also Ask
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Is Sarnia near the US?Yes, it is directly across from Port Huron, Michigan.
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What is the best route?The Trans-Canada Highway to the 401 and 402.
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Is it a good place to visit?Yes, it has a beautiful waterfront and parks.
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Do I need a passport?Only if you plan to cross into the US.
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How long is the drive?Approximately 19 hours of driving time.
Quick Info
- From St. Stephen, New Brunswick, Canada
- To Sarnia, Ontario, Canada
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Modes
Best Time to Travel
May to October for pleasant driving conditions.
Things to Do in Sarnia
1
Canatara Park
Enjoy the beach and trails at this large waterfront park.
2
Blue Water Bridge
View the iconic bridge connecting Canada and the US.
3
St. Clair River
Watch the large freighters pass through the river.
4
Downtown Sarnia
Explore the local shops and restaurants in the city center.
Tags
St. Stephen to Sarnia
driving to Ontario
travel to Sarnia
Canada road trip
New Brunswick to Ontario
Sarnia travel guide
Trans-Canada Highway
