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

Distance from Armour, SD to Altamont, SD

Distance

205 mi

Time

3 hours 36 mins

Gas Cost

$18 - $36

There are 133.45 miles from Armour to Altamont in northeast direction and 205 miles (329.92 kilometers) by car, following the I-90 route.

Armour and Altamont are 3 hours 36 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Altamont, SD. The halfway point is Montrose, SD.

Armour, SD and Altamont, SD are in the same time zone (CDT). Current time in both locations is 4:25 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Altamont, SD? 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 8.23 gallons of gas to cover the route between Armour, SD and Altamont, SD.

The estimated cost of gas to go from Armour to Altamont is $25.79.

During the route, an average car will release 161.15 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 Armour, SD and Altamont, SD

If you want to meet halfway between Armour, SD and Altamont, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.666344 and -97.165138, or 43º 39' 58.8384" N, 97º 9' 54.4968" W. This location is 102.40 miles away from Armour, SD and Altamont, SD and it would take approximately 1 hour 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 Montrose, SD, situated 95 miles from Armour, SD and 115 miles from Altamont, SD. It would take 1 hour 33 mins to go from Armour to Montrose and 1 hour 51 mins to go from Altamont to Montrose.

Major City Closest to Halfway Point

The major city closest to the halfway point between Armour, SD and Altamont, SD is Sioux Falls, SD, situated 122 miles from Armour, SD and 96 miles from Altamont, SD. It would take 1 hour 53 mins to go from Armour to and 1 hour 35 mins to go from Altamont to Sioux Falls.