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

Distance from Dewey, SD to Gem, KS

Distance

439 mi

Time

9 hours 8 mins

Gas Cost

$41 - $80

There are 326.80 miles from Dewey to Gem in southeast direction and 439 miles (706.50 kilometers) by car, following the US-26 route.

Dewey and Gem are 9 hours 8 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Gem, KS.

Please note the time difference between Dewey, SD and Gem, KS is 1 hour. The current time in Dewey is 6:02 am and the current time in Gem is 7:02 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Dewey, SD to Gem, KS:

Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Gem, KS? 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 17.65 gallons of gas to cover the route between Dewey, SD and Gem, KS.

The estimated cost of gas to go from Dewey to Gem is $57.56.

During the route, an average car will release 345.73 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 Dewey, SD and Gem, KS

If you want to meet halfway between Dewey, SD and Gem, KS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.416706 and -102.368296, or 41º 25' 0.1416" N, 102º 22' 5.8656" W. This location is 219.70 miles away from Dewey, SD and Gem, KS and it would take approximately 4 hours 34 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Oshkosh, NE, situated 221 miles from Dewey, SD and 218 miles from Gem, KS. It would take 4 hours 47 mins to go from Dewey to Oshkosh and 4 hours 22 mins to go from Gem to Oshkosh.