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

Distance from Walnut, IL to Arma, KS

Distance

526 mi

Time

10 hours 1 min

Gas Cost

$49 - $95

There are 388.30 miles from Walnut to Arma in southwest direction and 526 miles (846.51 kilometers) by car, following the I-80 route.

Walnut and Arma are 10 hours 1 min far apart, if you drive non-stop .

This is the fastest route from Walnut, IL to Arma, KS. The halfway point is Johnston, IA.

Walnut, IL and Arma, KS are in the same time zone (CDT). Current time in both locations is 2:38 pm.

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Lowest Price Rental Cars in Walnut, IL

Planning on renting a car to go from Walnut, IL to Arma, KS? 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 21.13 gallons of gas to cover the route between Walnut, IL and Arma, KS.

The estimated cost of gas to go from Walnut to Arma is $68.91.

During the route, an average car will release 413.89 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 Arma, KS

If you want to meet halfway between Walnut, IL and Arma, KS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.651386 and -93.748558, or 41º 39' 4.9896" N, 93º 44' 54.8088" W. This location is 263.01 miles away from Walnut, IL and Arma, KS and it would take approximately 5 hours to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Johnston, IA, situated 239 miles from Walnut, IL and 309 miles from Arma, KS. It would take 3 hours 48 mins to go from Walnut to Johnston and 4 hours 46 mins to go from Arma to Johnston.

Major City Closest to Halfway Point

The major city closest to the halfway point between Walnut, IL and Arma, KS is Des Moines, IA, situated 236 miles from Walnut, IL and 309 miles from Arma, KS. It would take 3 hours 44 mins to go from Walnut to and 4 hours 45 mins to go from Arma to Des Moines.