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

Distance from Alder, ON to Cornwall, ON

Distance

451 km

Time

5 hours 42 mins

Gas Cost

$34 - $82

There are 379.95 km (236.09 miles) from Alder to Cornwall in northeast direction and 450.62 km (280 miles) by car, following the 401 route.

Alder and Cornwall are 5 hours 42 mins far apart, if you drive non-stop .

This is the fastest route from Alder, ON to Cornwall, ON. The halfway point is Deseronto, ON.

Alder, ON and Cornwall, ON are in the same time zone (EDT). Current time in both locations is 3:39 pm.

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Lowest Price Rental Cars in Alder, ON

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Alder »

Gas Consumption and Emissions

A car with a fuel efficiency of 8.9 l/100 km will need 40.13 liters of gas to cover the route between Alder, ON and Cornwall, ON.

The estimated cost of gas to go from Alder to Cornwall is $60.60.

During the route, an average car will release 959.98 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 Alder, ON and Cornwall, ON

If you want to meet halfway between Alder, 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 44.246788 and -77.093102, or 44º 14' 48.4368" N, 77º 5' 35.1672" W. This location is 140.10 miles away from Alder, ON and Cornwall, ON and it would take approximately 2 hours 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 Deseronto, ON, situated 146 miles from Alder, ON and 141 miles from Cornwall, ON. It would take 2 hours 40 mins to go from Alder to Deseronto and 2 hours 25 mins to go from Cornwall to Deseronto.

Major City Closest to Halfway Point

The major city closest to the halfway point between Alder, ON and Cornwall, ON is Kingston, ON, situated 174 miles from Alder, ON and 113 miles from Cornwall, ON. It would take 3 hours 8 mins to go from Alder to and 1 hour 57 mins to go from Cornwall to Kingston.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	236.09 mi	379.95 km	205.16 nautical mi
Driving distance	280 mi	450.93 km	243.48 nautical mi

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