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

Distance from Armour, SD to Diagonal, IA

Distance

348 mi

Time

7 hours 8 mins

Gas Cost

$32 - $63

There are 268.74 miles from Armour to Diagonal in southeast direction and 348 miles (560.05 kilometers) by car, following the I-29 route.

Armour and Diagonal are 7 hours 8 mins far apart, if you drive non-stop .

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

Armour, SD and Diagonal, IA are in the same time zone (CDT). Current time in both locations is 11:38 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Diagonal, 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 13.97 gallons of gas to cover the route between Armour, SD and Diagonal, IA.

The estimated cost of gas to go from Armour to Diagonal is $45.56.

During the route, an average car will release 273.67 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 Diagonal, IA

If you want to meet halfway between Armour, SD and Diagonal, IA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.1191 and -96.199008, or 42º 7' 8.76" N, 96º 11' 56.4288" W. This location is 173.90 miles away from Armour, SD and Diagonal, IA and it would take approximately 3 hours 34 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Whiting, IA, situated 173 miles from Armour, SD and 180 miles from Diagonal, IA. It would take 3 hours 26 mins to go from Armour to Whiting and 3 hours 53 mins to go from Diagonal to Whiting.