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

Distance from Armour, SD to Ferdig, MT

Distance

920 mi

Time

16 hours 21 mins

Gas Cost

$86 - $167

There are 744.04 miles from Armour to Ferdig in northwest direction and 920 miles (1,480.60 kilometers) by car, following the I-90 route.

Armour and Ferdig are 16 hours 21 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Ferdig, MT.

Please note the time difference between Armour, SD and Ferdig, MT is 1 hour. The current time in Armour is 7:24 am and the current time in Ferdig is 6:24 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Ferdig, MT? 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 36.93 gallons of gas to cover the route between Armour, SD and Ferdig, MT.

The estimated cost of gas to go from Armour to Ferdig is $120.47.

During the route, an average car will release 723.58 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 Ferdig, MT

If you want to meet halfway between Armour, SD and Ferdig, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.547324 and -105.855025, or 45º 32' 50.3664" N, 105º 51' 18.09" W. This location is 459.81 miles away from Armour, SD and Ferdig, MT and it would take approximately 8 hours 10 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sonnette, MT, situated 462 miles from Armour, SD and 479 miles from Ferdig, MT. It would take 8 hours 34 mins to go from Armour to Sonnette and 9 hours 10 mins to go from Ferdig to Sonnette.