Distance between cities › USA › South Dakota › Dewey, SD › Distance from Dewey to Plankinton Book Hotels

Distance from Dewey, SD to Plankinton, SD

Distance

342 mi

Time

6 hours 16 mins

Gas Cost

$31 - $59

There are 278.13 miles from Dewey to Plankinton in east direction and 342 miles (550.40 kilometers) by car, following the I-90 and US-14 route.

Dewey and Plankinton are 6 hours 16 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Plankinton, SD. The halfway point is Kadoka, SD.

Please note the time difference between Dewey, SD and Plankinton, SD is 1 hour. The current time in Dewey is 1:45 am and the current time in Plankinton is 2:45 am.

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Lowest Price Rental Cars in Dewey, SD

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

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Dewey »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 13.72 gallons of gas to cover the route between Dewey, SD and Plankinton, SD.

The estimated cost of gas to go from Dewey to Plankinton is $43.

During the route, an average car will release 268.72 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 Dewey, SD and Plankinton, SD

If you want to meet halfway between Dewey, SD and Plankinton, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.835964 and -101.565704, or 43º 50' 9.4704" N, 101º 33' 56.5344" W. This location is 170.76 miles away from Dewey, SD and Plankinton, SD and it would take approximately 3 hours 8 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Kadoka, SD, situated 184 miles from Dewey, SD and 158 miles from Plankinton, SD. It would take 3 hours 21 mins to go from Dewey to Kadoka and 2 hours 4 mins to go from Plankinton to Kadoka.