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

Distance from Cornwall, ON to Adelaide, ON

Distance

658 km

Time

7 hours 58 mins

Gas Cost

$50 - $119

There are 602.08 km (374.11 miles) from Cornwall to Adelaide in southwest direction and 658.22 km (409 miles) by car, following the 401 route.

Cornwall and Adelaide are 7 hours 58 mins far apart, if you drive non-stop .

This is the fastest route from Cornwall, ON to Adelaide, ON. The halfway point is Cobourg, ON.

Cornwall, ON and Adelaide, ON are in the same time zone (EDT). Current time in both locations is 12:22 am.

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Lowest Price Rental Cars in Cornwall, ON

Planning on renting a car to go from Cornwall, ON to Adelaide, 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 58.56 liters of gas to cover the route between Cornwall, ON and Adelaide, ON.

The estimated cost of gas to go from Cornwall to Adelaide is $88.43.

During the route, an average car will release 1,400.80 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 3, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Cornwall, ON and Adelaide, ON

If you want to meet halfway between Cornwall, ON and Adelaide, ON or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.976357 and -78.226952, or 43º 58' 34.8852" N, 78º 13' 37.0272" W. This location is 204.43 miles away from Cornwall, ON and Adelaide, ON and it would take approximately 3 hours 59 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Cobourg, ON, situated 202 miles from Cornwall, ON and 211 miles from Adelaide, ON. It would take 4 hours 8 mins to go from Cornwall to Cobourg and 4 hours 17 mins to go from Adelaide to Cobourg.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	374.11 mi	602.08 km	325.10 nautical mi
Driving distance	409 mi	658 km	355.29 nautical mi

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