Driving
Markham to Sarnia
Updated: 28 May 2026
The journey from Markham to Sarnia is approximately 310 kilometers. The most efficient route is via Highway 401 west to Highway 402 west. Travel time is typically 3.5 to 4 hours. Sarnia is known as the 'Blue Water City' and is located on the St. Clair River. This route takes you across the entire length of the busy 401 corridor.
Total Distance: 310 km driving distance, 280 km straight-line air distance.
Fastest Way
Driving via Highway 401 and 402 is the fastest, taking about 3.5 hours.
Cheapest Way
Driving your own vehicle is the most practical and cost-effective method.
Compare Markham to Sarnia Routes
Driving
Direct
Duration
3 hours 30 mins
Avg Price
$60-$80 in fuel
Operator
Personal Vehicle
Route
Hwy 401 W to Hwy 402 W
The 402 can be very windy; drive with caution.
Travel Tips
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TrafficThe 401 can be very busy near London; check traffic reports.
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ParkingDowntown Sarnia has plenty of street parking.
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NavigationUse GPS to navigate the city as it has many one-way streets.
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EventsCheck the city website for local festivals.
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DiningThe downtown area has a variety of local restaurants.
Safety Tips
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Highway SafetyThe 401 is high-speed; maintain a safe following distance.
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WildlifeBe cautious of deer on rural roads near Sarnia.
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Winter DrivingEnsure your vehicle is equipped for winter conditions.
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EmergencyKeep a roadside assistance number handy.
People Also Ask
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Is Sarnia far from Markham?Yes, it is about 310 kilometers away.
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Can I take a train?Yes, VIA Rail service is available to Sarnia.
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How long is the drive?Approximately 3.5 to 4 hours.
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Is there a toll?No, the route is toll-free.
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What is the best route?Highway 401 to Highway 402 is the most direct.
Quick Info
- From Markham, Ontario, Canada
- To Sarnia, Ontario, Canada
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Modes
Best Time to Travel
Summer for the beautiful beaches along Lake Huron.
Things to Do in Sarnia
1
Canatara Park
A large park on the shores of Lake Huron. It features a beach, trails, and a petting zoo.
2
St. Clair River
Offers opportunities for boating and fishing. It is a key natural feature of the city.
3
Sarnia Bay Marina
A beautiful marina with views of the Blue Water Bridge. It is a great place for a walk.
4
Blue Water Bridge
A stunning bridge connecting Canada and the USA. It is a landmark of the city.
Tags
Markham to Sarnia
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