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

Distance from Armour, SD to Willard, MT

Distance

1,486 mi

Time

1 day 4 hours

Gas Cost

$139 - $269

There are 1,246.81 miles from Armour to Willard in east direction and 1,486 miles (2,391.49 kilometers) by car, following the I-90 route.

Armour and Willard are 1 day 4 hours far apart, if you drive non-stop .

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

Please note the time difference between Armour, SD and Willard, MT is 1 hour. The current time in Armour is 2:25 pm and the current time in Willard is 3:25 pm.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Armour, SD to Willard, MT:

Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Willard, 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 59.69 gallons of gas to cover the route between Armour, SD and Willard, MT.

The estimated cost of gas to go from Armour to Willard is $194.70.

During the route, an average car will release 1,169.40 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 Willard, MT

If you want to meet halfway between Armour, SD and Willard, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.722475 and -86.26041, or 41º 43' 20.91" N, 86º 15' 37.476" W. This location is 743.11 miles away from Armour, SD and Willard, MT and it would take approximately 14 hours 15 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Notre Dame, IN, situated 752 miles from Armour, SD and 739 miles from Willard, MT. It would take 14 hours 9 mins to go from Armour to Notre Dame and 14 hours 34 mins to go from Willard to Notre Dame.

Major City Closest to Halfway Point

The major city closest to the halfway point between Armour, SD and Willard, MT is South Bend, IN, situated 747 miles from Armour, SD and 740 miles from Willard, MT. It would take 14 hours 10 mins to go from Armour to South Bend and 14 hours 37 mins to go from Willard to South Bend.