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

Distance from Armour, SD to Mentor, KS

Distance

373 mi

Time

7 hours 18 mins

Gas Cost

$35 - $68

There are 318.67 miles from Armour to Mentor in south direction and 373 miles (600.29 kilometers) by car, following the US-81 route.

Armour and Mentor are 7 hours 18 mins far apart, if you drive non-stop .

This is the fastest route from Armour, SD to Mentor, KS.

Armour, SD and Mentor, KS are in the same time zone (CDT). Current time in both locations is 10:17 am.

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Lowest Price Rental Cars in Armour, SD

Planning on renting a car to go from Armour, SD to Mentor, KS? 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 14.97 gallons of gas to cover the route between Armour, SD and Mentor, KS.

The estimated cost of gas to go from Armour to Mentor is $48.84.

During the route, an average car will release 293.33 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 Mentor, KS

If you want to meet halfway between Armour, SD and Mentor, KS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.411453 and -97.719127, or 41º 24' 41.2308" N, 97º 43' 8.8572" W. This location is 186.40 miles away from Armour, SD and Mentor, KS and it would take approximately 3 hours 39 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Genoa, NE, situated 175 miles from Armour, SD and 198 miles from Mentor, KS. It would take 3 hours 37 mins to go from Armour to Genoa and 3 hours 41 mins to go from Mentor to Genoa.