Distance between cities › USA › Louisiana › Eunice, LA › Distance from Eunice to O Fallon Book Hotels

Distance from Eunice, LA to O Fallon, IL

Distance

691 mi

Time

13 hours 19 mins

Gas Cost

$64 - $125

There are 577.34 miles from Eunice to O Fallon in northeast direction and 691 miles (1,112.06 kilometers) by car, following the US-67 route.

Eunice and O Fallon are 13 hours 19 mins far apart, if you drive non-stop .

This is the fastest route from Eunice, LA to O Fallon, IL. The halfway point is Tillatoba, MS.

Eunice, LA and O Fallon, IL are in the same time zone (CDT). Current time in both locations is 11:58 pm.

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Lowest Price Rental Cars in Eunice, LA

Planning on renting a car to go from Eunice, LA to O Fallon, IL? Here there are some offers to rent a car in Eunice, LA

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Eunice »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 27.76 gallons of gas to cover the route between Eunice, LA and O Fallon, IL.

The estimated cost of gas to go from Eunice to O Fallon is $90.55.

During the route, an average car will release 543.85 pounds of CO₂ to the atmosphere. The carbon footprint would be 0.79 pounds of CO₂ per mile.

Average USA gas price used for calculation is $3.26 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Eunice, LA and O Fallon, IL

If you want to meet halfway between Eunice, LA and O Fallon, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 34.000305 and -89.849609, or 34º 0' 1.098" N, 89º 50' 58.5924" W. This location is 345.60 miles away from Eunice, LA and O Fallon, IL and it would take approximately 6 hours 39 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Tillatoba, MS, situated 379 miles from Eunice, LA and 384 miles from O Fallon, IL. It would take 5 hours 57 mins to go from Eunice to Tillatoba and 5 hours 47 mins to go from O Fallon to Tillatoba.