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

Distance from Dewey, SD to Onida, SD

Distance

312 mi

Time

6 hours 3 mins

Gas Cost

$28 - $54

There are 213.43 miles from Dewey to Onida in northeast direction and 312 miles (502.12 kilometers) by car, following the I-90 and US-14 route.

Dewey and Onida are 6 hours 3 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Onida, SD. The halfway point is Cottonwood, SD.

Please note the time difference between Dewey, SD and Onida, SD is 1 hour. The current time in Dewey is 1:42 am and the current time in Onida is 2:42 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Onida, 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 12.54 gallons of gas to cover the route between Dewey, SD and Onida, SD.

The estimated cost of gas to go from Dewey to Onida is $39.31.

During the route, an average car will release 245.66 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 Onida, SD

If you want to meet halfway between Dewey, SD and Onida, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.872890 and -101.972801, or 43º 52' 22.404" N, 101º 58' 22.0836" W. This location is 156.11 miles away from Dewey, SD and Onida, SD and it would take approximately 3 hours 1 min to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Cottonwood, SD, situated 161 miles from Dewey, SD and 157 miles from Onida, SD. It would take 3 hours 15 mins to go from Dewey to Cottonwood and 3 hours 5 mins to go from Onida to Cottonwood.