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

Distance from Armour, SD to Alpha, IA

Distance

409 mi

Time

7 hours 32 mins

Gas Cost

$38 - $74

There are 318.18 miles from Armour to Alpha in east direction and 409 miles (658.22 kilometers) by car, following the I-90 route.

Armour and Alpha are 7 hours 32 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Alpha, IA. The halfway point is Lakefield, MN.

Armour, SD and Alpha, IA are in the same time zone (CDT). Current time in both locations is 7:18 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Alpha, IA? 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 16.43 gallons of gas to cover the route between Armour, SD and Alpha, IA.

The estimated cost of gas to go from Armour to Alpha is $53.59.

During the route, an average car will release 321.88 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 Alpha, IA

If you want to meet halfway between Armour, SD and Alpha, IA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.638451 and -95.101822, or 43º 38' 18.4236" N, 95º 6' 6.5592" W. This location is 204.54 miles away from Armour, SD and Alpha, IA and it would take approximately 3 hours 46 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Lakefield, MN, situated 198 miles from Armour, SD and 216 miles from Alpha, IA. It would take 2 hours 58 mins to go from Armour to Lakefield and 3 hours 26 mins to go from Alpha to Lakefield.