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

Distance from Armour, SD to Lamar, AR

Distance

753 mi

Time

13 hours 50 mins

Gas Cost

$70 - $136

There are 605.03 miles from Armour to Lamar in southeast direction and 753 miles (1,211.84 kilometers) by car, following the I-29 route.

Armour and Lamar are 13 hours 50 mins far apart, if you drive non-stop .

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

Armour, SD and Lamar, AR are in the same time zone (CDT). Current time in both locations is 1:06 pm.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Lamar, 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 30.23 gallons of gas to cover the route between Armour, SD and Lamar, AR.

The estimated cost of gas to go from Armour to Lamar is $98.61.

During the route, an average car will release 592.26 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 Lamar, AR

If you want to meet halfway between Armour, SD and Lamar, AR or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 39.851 and -94.805398, or 39º 51' 3.6" N, 94º 48' 19.4328" W. This location is 376.36 miles away from Armour, SD and Lamar, AR and it would take approximately 6 hours 55 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Amazonia, MO, situated 357 miles from Armour, SD and 396 miles from Lamar, AR. It would take 6 hours 45 mins to go from Armour to Amazonia and 7 hours 12 mins to go from Lamar to Amazonia.