Distance between cities › USA › Missouri › Williamstown, MO › Distance from Williamstown to Sumner Book Hotels

Distance from Williamstown, MO to Sumner, IL

Distance

304 mi

Time

6 hours 25 mins

Gas Cost

$28 - $55

There are 234.82 miles from Williamstown to Sumner in southeast direction and 304 miles (489.24 kilometers) by car, following the US-61 route.

Williamstown and Sumner are 6 hours 25 mins far apart, if you drive non-stop .

This is the fastest route from Williamstown, MO to Sumner, IL.

Williamstown, MO and Sumner, IL are in the same time zone (CDT). Current time in both locations is 11:39 am.

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Lowest Price Rental Cars in Williamstown, MO

Planning on renting a car to go from Williamstown, MO to Sumner, IL? Here there are some offers to rent a car in Williamstown, MO

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Williamstown »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 12.22 gallons of gas to cover the route between Williamstown, MO and Sumner, IL.

The estimated cost of gas to go from Williamstown to Sumner is $39.85.

During the route, an average car will release 239.33 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 Williamstown, MO and Sumner, IL

If you want to meet halfway between Williamstown, MO and Sumner, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.629769 and -90.346457, or 38º 37' 47.1684" N, 90º 20' 47.2452" W. This location is 152.09 miles away from Williamstown, MO and Sumner, IL and it would take approximately 3 hours 12 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Brentwood, MO, situated 162 miles from Williamstown, MO and 144 miles from Sumner, IL. It would take 3 hours 31 mins to go from Williamstown to Brentwood and 2 hours 58 mins to go from Sumner to Brentwood.

Major City Closest to Halfway Point

The major city closest to the halfway point between Williamstown, MO and Sumner, IL is Saint Louis, MO, situated 169 miles from Williamstown, MO and 135 miles from Sumner, IL. It would take 3 hours 41 mins to go from Williamstown to Saint Louis and 2 hours 48 mins to go from Sumner to Saint Louis.