Distance between cities › USA › Illinois › Walnut, IL › Distance from Walnut to Onalaska Book Hotels

Distance from Walnut, IL to Onalaska, WI

Distance

281 mi

Time

5 hours 24 mins

Gas Cost

$26 - $51

There are 181.13 miles from Walnut to Onalaska in northwest direction and 281 miles (452.23 kilometers) by car, following the I-90 and I-94 route.

Walnut and Onalaska are 5 hours 24 mins far apart, if you drive non-stop .

This is the fastest route from Walnut, IL to Onalaska, WI.

Walnut, IL and Onalaska, WI are in the same time zone (CDT). Current time in both locations is 4:02 pm.

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Lowest Price Rental Cars in Walnut, IL

Planning on renting a car to go from Walnut, IL to Onalaska, WI? Here there are some offers to rent a car in Walnut, IL

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Walnut »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 11.29 gallons of gas to cover the route between Walnut, IL and Onalaska, WI.

The estimated cost of gas to go from Walnut to Onalaska is $36.82.

During the route, an average car will release 221.12 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 Walnut, IL and Onalaska, WI

If you want to meet halfway between Walnut, IL and Onalaska, WI or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.153965 and -89.30606, or 43º 9' 14.274" N, 89º 18' 21.816" W. This location is 140.52 miles away from Walnut, IL and Onalaska, WI and it would take approximately 2 hours 42 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sun Prairie, WI, situated 149 miles from Walnut, IL and 136 miles from Onalaska, WI. It would take 3 hours 7 mins to go from Walnut to Sun Prairie and 2 hours 33 mins to go from Onalaska to Sun Prairie.

Major City Closest to Halfway Point

The major city closest to the halfway point between Walnut, IL and Onalaska, WI is Madison, WI, situated 149 miles from Walnut, IL and 140 miles from Onalaska, WI. It would take 3 hours 8 mins to go from Walnut to Madison and 2 hours 44 mins to go from Onalaska to Madison.