Distance between cities › USA › Missouri › O Fallon, MO › Distance from O Fallon to Brussels Book Hotels

Distance from O Fallon, MO to Brussels, IL

Distance

21 mi

Time

56 minutes

Gas Cost

$2 - $4

There are 11.31 miles from O Fallon to Brussels in northeast direction and 21 miles (33.80 kilometers) by car and ferry, following the Golden Eagle Ferry route.

O Fallon and Brussels are 56 minutes far apart, if you drive non-stop for 41 minutes and take a ferry for 15 minutes .

This is the fastest route from O Fallon, MO to Brussels, IL.

O Fallon, MO and Brussels, IL are in the same time zone (CDT). Current time in both locations is 11:15 am.

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Lowest Price Rental Cars in O Fallon, MO

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in O Fallon »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 0.85 gallons of gas to cover the route between O Fallon, MO and Brussels, IL.

The estimated cost of gas to go from O Fallon to Brussels is $2.78.

During the route, an average car will release 16.71 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 O Fallon, MO and Brussels, IL

If you want to meet halfway between O Fallon, MO and Brussels, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.861244 and -90.607124, or 38º 51' 40.4784" N, 90º 36' 25.6464" W. This location is 10.62 miles away from O Fallon, MO and Brussels, IL and it would take approximately 28 minutes to reach the halfway point from both locations.