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

Distance from Armour, SD to Grannis, AR

Distance

823 mi

Time

15 hours 22 mins

Gas Cost

$77 - $149

There are 663.18 miles from Armour to Grannis in southeast direction and 823 miles (1,324.49 kilometers) by car, following the I-29 route.

Armour and Grannis are 15 hours 22 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Grannis, AR.

Armour, SD and Grannis, AR are in the same time zone (CDT). Current time in both locations is 1:07 pm.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Grannis, AR? 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 33.03 gallons of gas to cover the route between Armour, SD and Grannis, AR.

The estimated cost of gas to go from Armour to Grannis is $107.76.

During the route, an average car will release 647.19 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 Grannis, AR

If you want to meet halfway between Armour, SD and Grannis, AR or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.35408 and -94.762593, or 39º 21' 14.688" N, 94º 45' 45.3348" W. This location is 411.27 miles away from Armour, SD and Grannis, AR and it would take approximately 7 hours 41 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Platte City, MO, situated 396 miles from Armour, SD and 428 miles from Grannis, AR. It would take 7 hours 26 mins to go from Armour to Platte City and 7 hours 59 mins to go from Grannis to Platte City.

Major City Closest to Halfway Point

The major city closest to the halfway point between Armour, SD and Grannis, AR is Kansas City, MO, situated 419 miles from Armour, SD and 404 miles from Grannis, AR. It would take 7 hours 54 mins to go from Armour to Kansas City and 7 hours 29 mins to go from Grannis to Kansas City.