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

Distance from Armour, SD to Vaughn, MT

Distance

828 mi

Time

14 hours 48 mins

Gas Cost

$77 - $150

There are 702.63 miles from Armour to Vaughn in northwest direction and 828 miles (1,332.54 kilometers) by car, following the I-90 route.

Armour and Vaughn are 14 hours 48 mins far apart, if you drive non-stop .

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

Please note the time difference between Armour, SD and Vaughn, MT is 1 hour. The current time in Armour is 11:53 am and the current time in Vaughn is 10:53 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Vaughn, 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 33.26 gallons of gas to cover the route between Armour, SD and Vaughn, MT.

The estimated cost of gas to go from Armour to Vaughn is $108.48.

During the route, an average car will release 651.54 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 Vaughn, MT

If you want to meet halfway between Armour, SD and Vaughn, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.32974 and -105.185392, or 45º 19' 47.064" N, 105º 11' 7.4112" W. This location is 414.03 miles away from Armour, SD and Vaughn, MT and it would take approximately 7 hours 24 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Boyes, MT, situated 407 miles from Armour, SD and 421 miles from Vaughn, MT. It would take 7 hours 2 mins to go from Armour to Boyes and 7 hours 46 mins to go from Vaughn to Boyes.