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

Distance from Dewey, SD to Gladstone, OR

Distance

1,233 mi

Time

22 hours 7 mins

Gas Cost

$115 - $223

There are 921.83 miles from Dewey to Gladstone in west direction and 1,233 miles (1,984.32 kilometers) by car, following the I-90 route.

Dewey and Gladstone are 22 hours 7 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Gladstone, OR.

Please note the time difference between Dewey, SD and Gladstone, OR is 1 hour. The current time in Dewey is 11:27 am and the current time in Gladstone is 10:27 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Gladstone, OR? 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 49.51 gallons of gas to cover the route between Dewey, SD and Gladstone, OR.

The estimated cost of gas to go from Dewey to Gladstone is $161.51.

During the route, an average car will release 970.04 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 Gladstone, OR

If you want to meet halfway between Dewey, SD and Gladstone, OR or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.614845 and -113.043667, or 46º 36' 53.442" N, 113º 2' 37.2012" W. This location is 616.42 miles away from Dewey, SD and Gladstone, OR and it would take approximately 11 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 Drummond, MT, situated 631 miles from Dewey, SD and 602 miles from Gladstone, OR. It would take 11 hours 9 mins to go from Dewey to Drummond and 10 hours 59 mins to go from Gladstone to Drummond.