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

Distance from Dewey, SD to Keyapaha, SD

Distance

265 mi

Time

6 hours 10 mins

Gas Cost

$24 - $46

There are 198.32 miles from Dewey to Keyapaha in east direction and 265 miles (426.48 kilometers) by car, following the US-20 route.

Dewey and Keyapaha are 6 hours 10 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Keyapaha, SD.

Please note the time difference between Dewey, SD and Keyapaha, SD is 1 hour. The current time in Dewey is 3:03 am and the current time in Keyapaha is 4:03 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Keyapaha, 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 10.66 gallons of gas to cover the route between Dewey, SD and Keyapaha, SD.

The estimated cost of gas to go from Dewey to Keyapaha is $33.42.

During the route, an average car will release 208.85 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 Keyapaha, SD

If you want to meet halfway between Dewey, SD and Keyapaha, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.799432 and -102.236023, or 42º 47' 57.9552" N, 102º 14' 9.6828" W. This location is 132.72 miles away from Dewey, SD and Keyapaha, SD and it would take approximately 3 hours 5 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Gordon, NE, situated 138 miles from Dewey, SD and 128 miles from Keyapaha, SD. It would take 3 hours 16 mins to go from Dewey to Gordon and 2 hours 56 mins to go from Keyapaha to Gordon.