Driving
Harrow to Sarnia
Updated: 27 May 2026
The drive from Harrow to Sarnia is approximately 150 kilometers. You will take Highway 401 East and transition to Highway 402 West toward Sarnia. This route is very direct and takes about 1.75 hours. Sarnia is known for its beautiful waterfront and proximity to the US border.
Total Distance: 150 km driving distance; 130 km straight-line air distance.
Fastest Way
Driving via the 401 and 402 is the fastest, taking 1.75 hours.
Cheapest Way
Driving is the most cost-effective way to reach Sarnia.
Compare Harrow to Sarnia Routes
Driving
Direct
Duration
1 hour 45 mins
Avg Price
$30-$45 in fuel
Operator
Personal Vehicle
Route
Highway 401 East to Highway 402 West.
Highway 402 can be windy; drive carefully.
Travel Tips
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TrafficAvoid the 402 during peak hours.
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ParkingDowntown Sarnia has several public parking lots.
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EventsCheck local event calendars for festivals.
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NavigationUse GPS to navigate the city's streets.
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DiningTry the local restaurants in the downtown core.
Safety Tips
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PedestriansWatch for pedestrians in the downtown area.
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WeatherBe prepared for snow in the Sarnia region.
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DistractionKeep your eyes on the road.
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EmergencyKeep a first aid kit in your car.
People Also Ask
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Is Sarnia far?It is about 150 kilometers from Harrow.
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Can I take a bus?Yes, but it requires multiple transfers.
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Is the 402 busy?Yes, especially near the Sarnia exit.
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What is the best time?Mid-morning is the best time to travel.
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Are there tolls?No, this route is toll-free.
Quick Info
- From Harrow, Ontario, Canada
- To Sarnia, Ontario, Canada
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Modes
Best Time to Travel
Summer for the beautiful waterfront.
Things to Do in Sarnia
1
Canatara Park
A beautiful park on the shores of Lake Huron.
2
Blue Water Bridge
A stunning bridge connecting Canada and the US.
3
Sarnia Bay Marina
A lovely marina with walking paths.
4
St. Clair River
Perfect for boating and fishing.
Tags
Harrow to Sarnia
driving to Sarnia
Highway 401 travel
Sarnia transport
Ontario road trip
Harrow to Sarnia distance
fastest route to Sarnia
Sarnia commute
Southern Ontario travel
Harrow travel
