Distance between cities › Canada › Ontario › Cornwall, ON › Distance from Cornwall to Thurso Book Hotels

Distance from Cornwall, ON to Thurso, QC

Distance

113 km

Time

1 hour 55 mins

Gas Cost

$9 - $20

There are 75.56 km (46.95 miles) from Cornwall to Thurso in northwest direction and 112.65 km (70 miles) by car and ferry, following the 138 route.

Cornwall and Thurso are 1 hour 55 mins far apart, if you drive non-stop for 1 hour 47 mins and take a ferry for 7 minutes .

This is the fastest route from Cornwall, ON to Thurso, QC. The halfway point is Casselman, ON.

Cornwall, ON and Thurso, QC are in the same time zone (EDT). Current time in both locations is 6:39 am.

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Lowest Price Rental Cars in Cornwall, ON

Planning on renting a car to go from Cornwall, ON to Thurso, QC? Here there are some offers to rent a car in Cornwall, ON

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Cornwall »

Gas Consumption and Emissions

A car with a fuel efficiency of 8.9 l/100 km will need 10.03 liters of gas to cover the route between Cornwall, ON and Thurso, QC.

The estimated cost of gas to go from Cornwall to Thurso is $15.15.

During the route, an average car will release 239.92 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 Cornwall, ON and Thurso, QC

If you want to meet halfway between Cornwall, ON and Thurso, QC or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.332207 and -75.004906, or 45º 19' 55.9452" N, 75º 0' 17.6616" W. This location is 35.01 miles away from Cornwall, ON and Thurso, QC and it would take approximately 57 minutes to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Casselman, ON, situated 32 miles from Cornwall, ON and 30 miles from Thurso, QC. It would take 43 minutes to go from Cornwall to Casselman and 1 hour to go from Thurso to Casselman.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between Cornwall, ON and Thurso, QC in this table:

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	46.95 mi	75.56 km	40.80 nautical mi
Driving distance	70 mi	112.70 km	60.85 nautical mi

Road Trip Tips