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

Distance from Dewey, SD to Sidney, AR

Distance

1,081 mi

Time

21 hours 3 mins

Gas Cost

$101 - $196

There are 836.83 miles from Dewey to Sidney in southeast direction and 1,081 miles (1,739.70 kilometers) by car, following the I-80 route.

Dewey and Sidney are 21 hours 3 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Sidney, AR.

Please note the time difference between Dewey, SD and Sidney, AR is 1 hour. The current time in Dewey is 3:11 am and the current time in Sidney is 4:11 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Sidney, AR? 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 43.39 gallons of gas to cover the route between Dewey, SD and Sidney, AR.

The estimated cost of gas to go from Dewey to Sidney is $141.55.

During the route, an average car will release 850.19 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 Sidney, AR

If you want to meet halfway between Dewey, SD and Sidney, AR or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.82196 and -97.084103, or 40º 49' 19.056" N, 97º 5' 2.7708" W. This location is 540.27 miles away from Dewey, SD and Sidney, AR and it would take approximately 10 hours 31 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Milford, NE, situated 523 miles from Dewey, SD and 564 miles from Sidney, AR. It would take 10 hours 1 min to go from Dewey to Milford and 11 hours 13 mins to go from Sidney to Milford.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dewey, SD and Sidney, AR is Lincoln, NE, situated 541 miles from Dewey, SD and 540 miles from Sidney, AR. It would take 10 hours 26 mins to go from Dewey to Lincoln and 10 hours 50 mins to go from Sidney to Lincoln.