Driving
Fonthill to Sarnia
Updated: 27 May 2026
The journey from Fonthill to Sarnia is approximately 300 km. You will take the 403 to the 401 West, continuing past London until you reach Highway 402 West, which leads directly into Sarnia. The drive takes about 3 hours and 15 minutes. This route connects you from the Niagara region to the shores of Lake Huron. It is a major highway route suitable for all vehicle types.
Total Distance: 300 km driving distance, 270 km straight-line air distance.
Fastest Way
Driving via Highway 401 and 402 is the fastest route, taking 3 hours 15 minutes.
Cheapest Way
Driving is the most practical and cost-effective method.
Compare Fonthill to Sarnia Routes
Driving
Direct
Duration
3 hours 15 mins
Avg Price
$65-$80 in fuel
Operator
Personal Vehicle
Route
Highway 401 West to Highway 402 West.
The 402 is generally less congested than the 401.
Travel Tips
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TrafficExpect delays near London on the 401.
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BorderIf you plan to cross into the USA, have your passport ready.
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RestStop at an ONroute station for a break.
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NavigationUse a GPS to navigate the 401-402 interchange.
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FuelGas prices in Sarnia can be competitive; check local apps.
Safety Tips
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Highway SafetyStay alert for sudden traffic stops on the 401.
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WeatherLake Huron can cause sudden weather changes; be prepared.
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FatigueTake a 15-minute break every 2 hours.
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EmergencyKeep a winter emergency kit in your car.
People Also Ask
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Is there a train to Sarnia?Yes, VIA Rail provides service to Sarnia station.
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How long is the drive?The drive takes about 3 hours and 15 minutes.
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Are there tolls?No, the highways are toll-free.
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Is it a safe drive?Yes, it is a well-maintained route.
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Can I take a bus?Yes, there are bus services available.
Quick Info
- From Fonthill, Ontario, Canada
- To Sarnia, Ontario, Canada
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Modes
Best Time to Travel
Summer for enjoying the waterfront in Sarnia.
Things to Do in Sarnia
1
Canatara Park
A massive waterfront park on Lake Huron with a beach and trails. It is a local favorite.
2
Blue Water Bridge
View the impressive bridge connecting Canada and the USA. It is a great spot for photography.
3
St. Clair River Trail
A scenic path along the river, perfect for cycling or walking.
4
Sarnia Bay Marina
Enjoy the views of the boats and the waterfront atmosphere.
Tags
Fonthill to Sarnia
Highway 401 route
Sarnia travel
driving to Sarnia
Ontario road trip
fastest way to Sarnia
Fonthill transport
Sarnia commute
