Distance between cities › USA › South Dakota › Colman, SD › Distance from Colman to Armstrong Book Hotels

Distance from Colman, SD to Armstrong, MO

Distance

493 mi

Time

9 hours 13 mins

Gas Cost

$46 - $89

There are 388.66 miles from Colman to Armstrong in southeast direction and 493 miles (793.41 kilometers) by car, following the I-29 route.

Colman and Armstrong are 9 hours 13 mins far apart, if you drive non-stop .

This is the fastest route from Colman, SD to Armstrong, MO. The halfway point is Watson, MO.

Colman, SD and Armstrong, MO are in the same time zone (CDT). Current time in both locations is 12:18 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Colman, SD to Armstrong, MO:

Lowest Price Rental Cars in Colman, SD

Planning on renting a car to go from Colman, SD to Armstrong, MO? Here there are some offers to rent a car in Colman, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Colman »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 19.80 gallons of gas to cover the route between Colman, SD and Armstrong, MO.

The estimated cost of gas to go from Colman to Armstrong is $64.59.

During the route, an average car will release 387.95 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 Colman, SD and Armstrong, MO

If you want to meet halfway between Colman, SD and Armstrong, MO or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.504597 and -95.604179, or 40º 30' 16.5492" N, 95º 36' 15.0444" W. This location is 246.53 miles away from Colman, SD and Armstrong, MO and it would take approximately 4 hours 36 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Watson, MO, situated 276 miles from Colman, SD and 254 miles from Armstrong, MO. It would take 4 hours 25 mins to go from Colman to Watson and 4 hours 29 mins to go from Armstrong to Watson.