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

Distance from Marmora, ON to Cornwall, ON

Distance

295 km

Time

3 hours 51 mins

Gas Cost

$22 - $53

There are 240.64 km (149.53 miles) from Marmora to Cornwall in northeast direction and 294.51 km (183 miles) by car, following the 401 route.

Marmora and Cornwall are 3 hours 51 mins far apart, if you drive non-stop .

This is the fastest route from Marmora, ON to Cornwall, ON. The halfway point is Gananoque, ON.

Marmora, ON and Cornwall, ON are in the same time zone (EDT). Current time in both locations is 4:59 am.

Any questions or tips to share?

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Lowest Price Rental Cars in Marmora, ON

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Marmora »

Gas Consumption and Emissions

A car with a fuel efficiency of 8.9 l/100 km will need 26.26 liters of gas to cover the route between Marmora, ON and Cornwall, ON.

The estimated cost of gas to go from Marmora to Cornwall is $39.65.

During the route, an average car will release 628.12 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 Marmora, ON and Cornwall, ON

If you want to meet halfway between Marmora, ON and Cornwall, ON or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.332088 and -76.234924, or 44º 19' 55.5168" N, 76º 14' 5.7264" W. This location is 91.67 miles away from Marmora, ON and Cornwall, ON and it would take approximately 1 hour 55 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Gananoque, ON, situated 99 miles from Marmora, ON and 93 miles from Cornwall, ON. It would take 1 hour 49 mins to go from Marmora to Gananoque and 1 hour 36 mins to go from Cornwall to Gananoque.

Major City Closest to Halfway Point

The major city closest to the halfway point between Marmora, ON and Cornwall, ON is Kingston, ON, situated 83 miles from Marmora, ON and 113 miles from Cornwall, ON. It would take 1 hour 35 mins to go from Marmora to and 1 hour 57 mins to go from Cornwall to Kingston.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	149.53 mi	240.64 km	129.94 nautical mi
Driving distance	183 mi	295.05 km	159.31 nautical mi

Road Trip Tips