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

Distance from Williamstown, MO to Mellette, SD

Distance

634 mi

Time

12 hours 25 mins

Gas Cost

$59 - $115

There are 480.32 miles from Williamstown to Mellette in northwest direction and 634 miles (1,020.32 kilometers) by car, following the I-29 route.

Williamstown and Mellette are 12 hours 25 mins far apart, if you drive non-stop .

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

Williamstown, MO and Mellette, SD are in the same time zone (CDT). Current time in both locations is 10:54 am.

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Lowest Price Rental Cars in Williamstown, MO

Planning on renting a car to go from Williamstown, MO to Mellette, 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 25.47 gallons of gas to cover the route between Williamstown, MO and Mellette, SD.

The estimated cost of gas to go from Williamstown to Mellette is $83.07.

During the route, an average car will release 498.95 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 Williamstown, MO and Mellette, SD

If you want to meet halfway between Williamstown, MO and Mellette, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.599108 and -95.960569, or 41º 35' 56.7888" N, 95º 57' 38.0484" W. This location is 317.07 miles away from Williamstown, MO and Mellette, SD and it would take approximately 6 hours 12 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Modale, IA, situated 307 miles from Williamstown, MO and 330 miles from Mellette, SD. It would take 6 hours 29 mins to go from Williamstown to Modale and 6 hours 2 mins to go from Mellette to Modale.

Major City Closest to Halfway Point

The major city closest to the halfway point between Williamstown, MO and Mellette, SD is Omaha, NE, situated 313 miles from Williamstown, MO and 362 miles from Mellette, SD. It would take 6 hours 37 mins to go from Williamstown to Omaha and 6 hours 41 mins to go from Mellette to Omaha.