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

Distance from Cornwall, ON to Ottawa, ON

Distance

103 km

Time

1 hour 28 mins

Gas Cost

$8 - $19

There are 87.84 km (54.58 miles) from Cornwall to Ottawa in northwest direction and 103.00 km (64 miles) by car, following the 417 route.

Cornwall and Ottawa are 1 hour 28 mins far apart, if you drive non-stop .

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

Cornwall, ON and Ottawa, ON are in the same time zone (EDT). Current time in both locations is 12:52 pm.

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Lowest Price Rental Cars in Cornwall, ON

Planning on renting a car to go from Cornwall, ON to Ottawa, ON? 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 9.15 liters of gas to cover the route between Cornwall, ON and Ottawa, ON.

The estimated cost of gas to go from Cornwall to Ottawa is $13.82.

During the route, an average car will release 218.90 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 Ottawa, ON

If you want to meet halfway between Cornwall, ON and Ottawa, ON or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.308144 and -75.146271, or 45º 18' 29.3184" N, 75º 8' 46.5756" W. This location is 31.95 miles away from Cornwall, ON and Ottawa, ON and it would take approximately 44 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 34 miles from Ottawa, ON. It would take 43 minutes to go from Cornwall to Casselman and 36 minutes to go from Ottawa to Casselman.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	54.58 mi	87.84 km	47.43 nautical mi
Driving distance	64 mi	102.82 km	55.52 nautical mi

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