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

Distance from Markham, ON to Sarnia, ON

Distance

302 km

Time

3 hours 43 mins

Gas Cost

$23 - $55

There are 266.59 km (165.65 miles) from Markham to Sarnia in southwest direction and 300.95 km (187 miles) by car, following the 401 route.

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

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

Markham, ON and Sarnia, ON are in the same time zone (EDT). Current time in both locations is 3:31 am.

Any questions or tips to share?

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

Lowest Price Rental Cars in Markham, ON

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Markham »

Gas Consumption and Emissions

A car with a fuel efficiency of 8.9 l/100 km will need 26.86 liters of gas to cover the route between Markham, ON and Sarnia, ON.

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

During the route, an average car will release 642.38 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 5, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Markham, ON and Sarnia, ON

If you want to meet halfway between Markham, ON and Sarnia, ON or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.077850 and -80.784782, or 43º 4' 40.26" N, 80º 47' 5.2152" W. This location is 93.75 miles away from Markham, ON and Sarnia, 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 103 miles from Markham, ON and 91 miles from Sarnia, ON. It would take 1 hour 47 mins to go from Markham to Beachville and 1 hour 27 mins to go from Sarnia to Beachville.

Major City Closest to Halfway Point

The major city closest to the halfway point between Markham, ON and Sarnia, ON is London, ON, situated 126 miles from Markham, ON and 69 miles from Sarnia, ON. It would take 2 hours 10 mins to go from Markham to and 1 hour 9 mins to go from Sarnia to London.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between Markham, ON and Sarnia, 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	301.75 km	162.93 nautical mi

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