Distance between cities › Canada › New Brunswick › Saint John, NB › Distance from Saint John to Cornwall Book Hotels

Distance from Saint John, NB to Cornwall, ON

Distance

846 km

Time

11 hours 48 mins

Gas Cost

$64 - $153

There are 679.95 km (422.50 miles) from Saint John to Cornwall in west direction and 844.91 km (525 miles) by car, following the NB 1 route.

Saint John and Cornwall are 11 hours 48 mins far apart, if you drive non-stop .

This is the fastest route from Saint John, NB to Cornwall, ON.

Please note the time difference between Saint John, NB and Cornwall, ON is 1 hour. The current time in Saint John is 2:17 pm and the current time in Cornwall is 1:17 pm.

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Lowest Price Rental Cars in Saint John, NB

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Saint John »

Gas Consumption and Emissions

A car with a fuel efficiency of 8.9 l/100 km will need 75.26 liters of gas to cover the route between Saint John, NB and Cornwall, ON.

The estimated cost of gas to go from Saint John to Cornwall is $113.64.

During the route, an average car will release 1,800.12 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 3, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Saint John, NB and Cornwall, ON

If you want to meet halfway between Saint John, NB 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 45.088112 and -70.334480, or 45º 5' 17.2032" N, 70º 20' 4.128" W. This location is 262.71 miles away from Saint John, NB and Cornwall, ON and it would take approximately 5 hours 54 mins to reach the halfway point from both locations.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between Saint John, NB and Cornwall, ON in this table:

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	422.50 mi	679.95 km	367.14 nautical mi
Driving distance	525 mi	845.57 km	456.57 nautical mi

Road Trip Tips