Distance between cities › USA › South Dakota › Armour, SD › Distance from Armour to Eureka Book Hotels

Distance from Armour, SD to Eureka, KS

Distance

496 mi

Time

9 hours 36 mins

Gas Cost

$46 - $90

There are 394.67 miles from Armour to Eureka in southeast direction and 496 miles (798.23 kilometers) by car, following the US-81 route.

Armour and Eureka are 9 hours 36 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Eureka, KS.

Armour, SD and Eureka, KS are in the same time zone (CDT). Current time in both locations is 8:53 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Eureka, KS? Here there are some offers to rent a car in Armour, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Armour »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 19.94 gallons of gas to cover the route between Armour, SD and Eureka, KS.

The estimated cost of gas to go from Armour to Eureka is $65.03.

During the route, an average car will release 390.61 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 Armour, SD and Eureka, KS

If you want to meet halfway between Armour, SD and Eureka, KS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.513744 and -97.591475, or 40º 30' 49.4784" N, 97º 35' 29.31" W. This location is 248.22 miles away from Armour, SD and Eureka, KS and it would take approximately 4 hours 48 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Geneva, NE, situated 245 miles from Armour, SD and 252 miles from Eureka, KS. It would take 5 hours 1 min to go from Armour to Geneva and 4 hours 38 mins to go from Eureka to Geneva.