Distance between cities › Canada › Quebec › L'Assomption, QC › Distance from L'Assomption to Sarnia Book Hotels

Distance from L'Assomption, QC to Sarnia, ON

Distance

858 km

Time

10 hours 27 mins

Gas Cost

$65 - $156

There are 781.12 km (485.37 miles) from L'Assomption to Sarnia in southwest direction and 857.78 km (533 miles) by car, following the 401 route.

L'Assomption and Sarnia are 10 hours 27 mins far apart, if you drive non-stop .

This is the fastest route from L'Assomption, QC to Sarnia, ON.

L'Assomption, QC and Sarnia, ON are in the same time zone (EDT). Current time in both locations is 4:04 pm.

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Lowest Price Rental Cars in L'Assomption, QC

Planning on renting a car to go from L'Assomption, QC to Sarnia, ON? Here there are some offers to rent a car in L'Assomption, QC

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in L'Assomption »

Gas Consumption and Emissions

A car with a fuel efficiency of 8.9 l/100 km will need 76.38 liters of gas to cover the route between L'Assomption, QC and Sarnia, ON.

The estimated cost of gas to go from L'Assomption to Sarnia is $115.33.

During the route, an average car will release 1,827.01 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 L'Assomption, QC and Sarnia, ON

If you want to meet halfway between L'Assomption, QC and Sarnia, ON or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 44.069411 and -77.776271, or 44º 4' 9.8796" N, 77º 46' 34.5756" W. This location is 266.63 miles away from L'Assomption, QC and Sarnia, ON and it would take approximately 5 hours 13 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Brighton, ON, situated 271 miles from L'Assomption, QC and 269 miles from Sarnia, ON. It would take 5 hours 21 mins to go from L'Assomption to Brighton and 5 hours 18 mins to go from Sarnia to Brighton.

Distance conversions

Checkout the distance in miles, kilometers and nautical miles between L'Assomption, QC and Sarnia, ON in this table:

Distance type	Miles	Kilometers	Nautical miles
Straight line distance	485.37 mi	781.12 km	421.77 nautical mi
Driving distance	533 mi	858.20 km	463.39 nautical mi

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