Distance between cities › Canada › Ontario › Sarnia, ON › Distance from Sarnia to Markham Book Hotels

Distance from Sarnia, ON to Markham, ON

Distance

302 km

Time

3 hours 43 mins

Gas Cost

$23 - $55

There are 266.59 km (165.65 miles) from Sarnia to Markham in northeast direction and 300.95 km (187 miles) by car, following the 402 route.

Sarnia and Markham are 3 hours 43 mins far apart, if you drive non-stop .

This is the fastest route from Sarnia, ON to Markham, ON. The halfway point is Beachville, ON.

Sarnia, ON and Markham, ON are in the same time zone (EDT). Current time in both locations is 9:08 pm.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Sarnia, ON to Markham, ON:

Lowest Price Rental Cars in Sarnia, ON

Planning on renting a car to go from Sarnia, ON to Markham, ON? Here there are some offers to rent a car in Sarnia, ON

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Sarnia »

Gas Consumption and Emissions

A car with a fuel efficiency of 8.9 l/100 km will need 26.85 liters of gas to cover the route between Sarnia, ON and Markham, ON.

The estimated cost of gas to go from Sarnia to Markham is $40.55.

During the route, an average car will release 642.34 kilograms of CO₂ to the atmosphere. The carbon footprint would be 2.13 kilograms of CO₂ per kilometer.

Average Canada gas price used for calculation is $1.51 per liter of regular gas. Price last updated on March 4, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Sarnia, ON and Markham, ON

If you want to meet halfway between Sarnia, ON and Markham, ON or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.078484 and -80.783356, or 43º 4' 42.5424" N, 80º 47' 0.0816" W. This location is 93.74 miles away from Sarnia, ON and Markham, ON and it would take approximately 1 hour 51 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Beachville, ON, situated 91 miles from Sarnia, ON and 99 miles from Markham, ON. It would take 1 hour 53 mins to go from Sarnia to Beachville and 2 hours 9 mins to go from Markham to Beachville.

Major City Closest to Halfway Point

The major city closest to the halfway point between Sarnia, ON and Markham, ON is London, ON, situated 64 miles from Sarnia, ON and 127 miles from Markham, ON. It would take 1 hour 27 mins to go from Sarnia to and 2 hours 40 mins to go from Markham to London.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between Sarnia, ON and Markham, ON in this table:

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	165.65 mi	266.59 km	143.95 nautical mi
Driving distance	187 mi	301.73 km	162.92 nautical mi

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