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

Distance from Cornwall, ON to Alder, ON

Distance

453 km

Time

5 hours 43 mins

Gas Cost

$34 - $82

There are 379.95 km (236.09 miles) from Cornwall to Alder in southwest direction and 452.23 km (281 miles) by car, following the 401 route.

Cornwall and Alder are 5 hours 43 mins far apart, if you drive non-stop .

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

Cornwall, ON and Alder, ON are in the same time zone (EDT). Current time in both locations is 7:28 am.

Any questions or tips to share?

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

Lowest Price Rental Cars in Cornwall, ON

Planning on renting a car to go from Cornwall, ON to Alder, 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 40.31 liters of gas to cover the route between Cornwall, ON and Alder, ON.

The estimated cost of gas to go from Cornwall to Alder is $60.87.

During the route, an average car will release 964.32 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 Alder, ON

If you want to meet halfway between Cornwall, ON and Alder, ON or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.249023 and -77.076889, or 44º 14' 56.4828" N, 77º 4' 36.8004" W. This location is 140.73 miles away from Cornwall, ON and Alder, 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 144 miles from Cornwall, ON and 146 miles from Alder, ON. It would take 2 hours 27 mins to go from Cornwall to Deseronto and 2 hours 40 mins to go from Alder to Deseronto.

Major City Closest to Halfway Point

The major city closest to the halfway point between Cornwall, ON and Alder, ON is Kingston, ON, situated 114 miles from Cornwall, ON and 175 miles from Alder, ON. It would take 1 hour 57 mins to go from Cornwall to and 3 hours 7 mins to go from Alder to Kingston.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between Cornwall, ON and Alder, 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	281 mi	452.97 km	244.58 nautical mi

Road Trip Tips