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

Distance from Dewey, SD to Armour, SD

Distance

372 mi

Time

6 hours 56 mins

Gas Cost

$33 - $65

There are 286.07 miles from Dewey to Armour in east direction and 372 miles (598.68 kilometers) by car, following the I-90 and US-14 route.

Dewey and Armour are 6 hours 56 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Armour, SD. The halfway point is Belvidere, SD.

Please note the time difference between Dewey, SD and Armour, SD is 1 hour. The current time in Dewey is 1:45 am and the current time in Armour is 2:45 am.

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Lowest Price Rental Cars in Dewey, SD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Dewey »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 14.94 gallons of gas to cover the route between Dewey, SD and Armour, SD.

The estimated cost of gas to go from Dewey to Armour is $46.85.

During the route, an average car will release 292.80 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 $3.14 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Dewey, SD and Armour, SD

If you want to meet halfway between Dewey, SD 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 43.841728 and -101.319344, or 43º 50' 30.2208" N, 101º 19' 9.6384" W. This location is 186.06 miles away from Dewey, SD and Armour, SD and it would take approximately 3 hours 28 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Belvidere, SD, situated 197 miles from Dewey, SD and 177 miles from Armour, SD. It would take 3 hours 30 mins to go from Dewey to Belvidere and 2 hours 31 mins to go from Armour to Belvidere.