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

Distance from Herreid, SD to Armour, SD

Distance

272 mi

Time

5 hours

Gas Cost

$24 - $47

There are 193.40 miles from Herreid to Armour in southeast direction and 272 miles (437.74 kilometers) by car, following the I-90 route.

Herreid and Armour are 5 hours far apart, if you drive non-stop .

This is the fastest route from Herreid, SD to Armour, SD. The halfway point is Vivian, SD.

Herreid, SD and Armour, SD are in the same time zone (CDT). Current time in both locations is 11:07 am.

Any questions or tips to share?

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

Lowest Price Rental Cars in Herreid, SD

Planning on renting a car to go from Herreid, SD to Armour, SD? Here there are some offers to rent a car in Herreid, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Herreid »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 10.94 gallons of gas to cover the route between Herreid, SD and Armour, SD.

The estimated cost of gas to go from Herreid to Armour is $34.31.

During the route, an average car will release 214.39 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 $3.14 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Herreid, SD and Armour, SD

If you want to meet halfway between Herreid, SD and Armour, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.905502 and -100.222595, or 43º 54' 19.8072" N, 100º 13' 21.342" W. This location is 136.24 miles away from Herreid, SD and Armour, SD and it would take approximately 2 hours 30 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Vivian, SD, situated 147 miles from Herreid, SD and 127 miles from Armour, SD. It would take 3 hours 26 mins to go from Herreid to Vivian and 1 hour 55 mins to go from Armour to Vivian.