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

Distance from Dewey, SD to Frankfort, SD

Distance

417 mi

Time

8 hours 6 mins

Gas Cost

$37 - $73

There are 298.84 miles from Dewey to Frankfort in northeast direction and 417 miles (671.10 kilometers) by car, following the I-90 and US-14 route.

Dewey and Frankfort are 8 hours 6 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Frankfort, SD. The halfway point is Okaton, SD.

Please note the time difference between Dewey, SD and Frankfort, SD is 1 hour. The current time in Dewey is 6:18 am and the current time in Frankfort is 7:18 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Frankfort, 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 16.73 gallons of gas to cover the route between Dewey, SD and Frankfort, SD.

The estimated cost of gas to go from Dewey to Frankfort is $52.45.

During the route, an average car will release 327.76 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 Frankfort, SD

If you want to meet halfway between Dewey, SD and Frankfort, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.889793 and -100.843185, or 43º 53' 23.2548" N, 100º 50' 35.466" W. This location is 208.28 miles away from Dewey, SD and Frankfort, SD and it would take approximately 4 hours 3 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Okaton, SD, situated 217 miles from Dewey, SD and 221 miles from Frankfort, SD. It would take 3 hours 44 mins to go from Dewey to Okaton and 3 hours 49 mins to go from Frankfort to Okaton.