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

Distance from Armour, SD to Bairoil, WY

Distance

623 mi

Time

11 hours 5 mins

Gas Cost

$58 - $113

There are 472.82 miles from Armour to Bairoil in west direction and 623 miles (1,002.62 kilometers) by car, following the I-90 route.

Armour and Bairoil are 11 hours 5 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Bairoil, WY.

Please note the time difference between Armour, SD and Bairoil, WY is 1 hour. The current time in Armour is 9:14 am and the current time in Bairoil is 8:14 am.

Any questions or tips to share?

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

Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Bairoil, 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 25.02 gallons of gas to cover the route between Armour, SD and Bairoil, WY.

The estimated cost of gas to go from Armour to Bairoil is $81.60.

During the route, an average car will release 490.11 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 Bairoil, WY

If you want to meet halfway between Armour, SD and Bairoil, WY or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.772851 and -103.219647, or 43º 46' 22.2636" N, 103º 13' 10.7292" W. This location is 311.45 miles away from Armour, SD and Bairoil, WY and it would take approximately 5 hours 32 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Hermosa, SD, situated 298 miles from Armour, SD and 326 miles from Bairoil, WY. It would take 5 hours to go from Armour to Hermosa and 6 hours 5 mins to go from Bairoil to Hermosa.