Distance between cities › USA › Missouri › Napton, MO › Distance from Napton to Armour Book Hotels

Distance from Napton, MO to Armour, SD

Distance

511 mi

Time

9 hours 37 mins

Gas Cost

$48 - $93

There are 402.03 miles from Napton to Armour in northwest direction and 511 miles (822.37 kilometers) by car, following the I-29 and US-6 route.

Napton and Armour are 9 hours 37 mins far apart, if you drive non-stop .

This is the fastest route from Napton, MO to Armour, SD.

Napton, MO and Armour, SD are in the same time zone (CDT). Current time in both locations is 6:39 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Napton, MO to Armour, SD:

Lowest Price Rental Cars in Napton, MO

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Napton »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 20.53 gallons of gas to cover the route between Napton, MO and Armour, SD.

The estimated cost of gas to go from Napton to Armour is $66.98.

During the route, an average car will release 402.27 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 Napton, MO and Armour, SD

If you want to meet halfway between Napton, MO and Armour, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.062996 and -95.821436, or 41º 3' 46.7856" N, 95º 49' 17.1696" W. This location is 255.63 miles away from Napton, MO and Armour, SD 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 Pacific Junction, IA, situated 254 miles from Napton, MO and 258 miles from Armour, SD. It would take 4 hours 43 mins to go from Napton to Pacific Junction and 4 hours 58 mins to go from Armour to Pacific Junction.

Major City Closest to Halfway Point

The major city closest to the halfway point between Napton, MO and Armour, SD is Omaha, NE, situated 280 miles from Napton, MO and 242 miles from Armour, SD. It would take 5 hours 13 mins to go from Napton to Omaha and 4 hours 44 mins to go from Armour to Omaha.