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

Distance from Armour, SD to Alpine, WY

Distance

852 mi

Time

15 hours 45 mins

Gas Cost

$79 - $154

There are 637.18 miles from Armour to Alpine in west direction and 852 miles (1,371.16 kilometers) by car, following the I-90 route.

Armour and Alpine are 15 hours 45 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Alpine, WY. The halfway point is Uva, WY.

Please note the time difference between Armour, SD and Alpine, WY is 1 hour. The current time in Armour is 7:42 am and the current time in Alpine is 6:42 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Alpine, WY? 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 34.23 gallons of gas to cover the route between Armour, SD and Alpine, WY.

The estimated cost of gas to go from Armour to Alpine is $111.64.

During the route, an average car will release 670.55 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 Alpine, WY

If you want to meet halfway between Armour, SD and Alpine, WY or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.278397 and -104.997704, or 42º 16' 42.2292" N, 104º 59' 51.7344" W. This location is 426.11 miles away from Armour, SD and Alpine, WY and it would take approximately 7 hours 52 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Uva, WY, situated 516 miles from Armour, SD and 518 miles from Alpine, WY. It would take 7 hours 40 mins to go from Armour to Uva and 7 hours 39 mins to go from Alpine to Uva.