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

Distance from Williamstown, MO to Marion, SD

Distance

467 mi

Time

9 hours 24 mins

Gas Cost

$44 - $85

There are 356.86 miles from Williamstown to Marion in northwest direction and 467 miles (751.56 kilometers) by car, following the I-29 route.

Williamstown and Marion are 9 hours 24 mins far apart, if you drive non-stop .

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

Williamstown, MO and Marion, SD are in the same time zone (CDT). Current time in both locations is 12:35 pm.

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Lowest Price Rental Cars in Williamstown, MO

Planning on renting a car to go from Williamstown, MO to Marion, 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 18.75 gallons of gas to cover the route between Williamstown, MO and Marion, SD.

The estimated cost of gas to go from Williamstown to Marion is $61.16.

During the route, an average car will release 367.32 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 Marion, SD

If you want to meet halfway between Williamstown, MO and Marion, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.49329 and -94.649262, or 41º 29' 35.844" N, 94º 38' 57.3432" W. This location is 233.42 miles away from Williamstown, MO and Marion, SD and it would take approximately 4 hours 42 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Adair, IA, situated 230 miles from Williamstown, MO and 238 miles from Marion, SD. It would take 5 hours 5 mins to go from Williamstown to Adair and 4 hours 20 mins to go from Marion to Adair.