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

Distance from Cornwall, ON to Back Bay, NB

Distance

786 km

Time

11 hours 8 mins

Gas Cost

$59 - $142

There are 617.41 km (383.64 miles) from Cornwall to Back Bay in east direction and 785.36 km (488 miles) by car, following the I-395 and ME 9 and ME 15 route.

Cornwall and Back Bay are 11 hours 8 mins far apart, if you drive non-stop .

This is the fastest route from Cornwall, ON to Back Bay, NB. The halfway point is Marston, QC.

Please note the time difference between Cornwall, ON and Back Bay, NB is 1 hour. The current time in Cornwall is 9:41 am and the current time in Back Bay is 10:41 am.

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

Lowest Price Rental Cars in Cornwall, ON

Planning on renting a car to go from Cornwall, ON to Back Bay, NB? 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 69.93 liters of gas to cover the route between Cornwall, ON and Back Bay, NB.

The estimated cost of gas to go from Cornwall to Back Bay is $105.59.

During the route, an average car will release 1,672.67 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 Back Bay, NB

If you want to meet halfway between Cornwall, ON and Back Bay, NB or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.290524 and -70.596062, or 45º 17' 25.8864" N, 70º 35' 45.8232" W. This location is 244.11 miles away from Cornwall, ON and Back Bay, NB and it would take approximately 5 hours 34 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Marston, QC, situated 215 miles from Cornwall, ON and 283 miles from Back Bay, NB. It would take 4 hours 24 mins to go from Cornwall to Marston and 5 hours 53 mins to go from Back Bay to Marston.

Distance conversions

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

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	383.64 mi	617.41 km	333.38 nautical mi
Driving distance	488 mi	785.71 km	424.25 nautical mi

Road Trip Tips