Distance between cities › USA › Missouri › Williamstown, MO › Distance from Williamstown to Ardmore Book Hotels

Distance from Williamstown, MO to Ardmore, SD

Distance

781 mi

Time

15 hours 54 mins

Gas Cost

$73 - $141

There are 641.13 miles from Williamstown to Ardmore in northwest direction and 781 miles (1,256.90 kilometers) by car, following the N-2 route.

Williamstown and Ardmore are 15 hours 54 mins far apart, if you drive non-stop .

This is the fastest route from Williamstown, MO to Ardmore, SD.

Please note the time difference between Williamstown, MO and Ardmore, SD is 1 hour. The current time in Williamstown is 7:39 am and the current time in Ardmore is 6:39 am.

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Lowest Price Rental Cars in Williamstown, MO

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Williamstown »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 31.36 gallons of gas to cover the route between Williamstown, MO and Ardmore, SD.

The estimated cost of gas to go from Williamstown to Ardmore is $102.29.

During the route, an average car will release 614.36 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 Williamstown, MO and Ardmore, SD

If you want to meet halfway between Williamstown, MO and Ardmore, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.70005 and -97.543148, or 41º 42' 0.18" N, 97º 32' 35.3328" W. This location is 390.40 miles away from Williamstown, MO and Ardmore, SD and it would take approximately 7 hours 57 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Cornlea, NE, situated 395 miles from Williamstown, MO and 389 miles from Ardmore, SD. It would take 8 hours 18 mins to go from Williamstown to Cornlea and 7 hours 41 mins to go from Ardmore to Cornlea.