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

Distance from Armour, SD to Waterloo, IA

Distance

355 mi

Time

7 hours 4 mins

Gas Cost

$33 - $64

There are 309.10 miles from Armour to Waterloo in east direction and 355 miles (571.32 kilometers) by car, following the US-20 route.

Armour and Waterloo are 7 hours 4 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Waterloo, IA.

Armour, SD and Waterloo, IA are in the same time zone (CDT). Current time in both locations is 10:35 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Waterloo, 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 14.25 gallons of gas to cover the route between Armour, SD and Waterloo, IA.

The estimated cost of gas to go from Armour to Waterloo is $46.48.

During the route, an average car will release 279.16 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 Waterloo, IA

If you want to meet halfway between Armour, SD and Waterloo, IA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.474236 and -95.628896, or 42º 28' 27.2496" N, 95º 37' 44.0256" W. This location is 177.40 miles away from Armour, SD and Waterloo, IA and it would take approximately 3 hours 32 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Cushing, IA, situated 181 miles from Armour, SD and 175 miles from Waterloo, IA. It would take 3 hours 41 mins to go from Armour to Cushing and 3 hours 25 mins to go from Waterloo to Cushing.