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

Distance from Dewey, SD to Ruston, WA

Distance

1,173 mi

Time

21 hours 3 mins

Gas Cost

$109 - $213

There are 930.30 miles from Dewey to Ruston in northwest direction and 1,173 miles (1,887.76 kilometers) by car, following the I-90 route.

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

This is the fastest route from Dewey, SD to Ruston, WA.

Please note the time difference between Dewey, SD and Ruston, WA is 1 hour. The current time in Dewey is 10:39 am and the current time in Ruston is 9:39 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Ruston, WA? 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 47.11 gallons of gas to cover the route between Dewey, SD and Ruston, WA.

The estimated cost of gas to go from Dewey to Ruston is $153.68.

During the route, an average car will release 923.02 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 Ruston, WA

If you want to meet halfway between Dewey, SD and Ruston, WA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 46.450341 and -112.723143, or 46º 27' 1.2276" N, 112º 43' 23.3148" W. This location is 586.55 miles away from Dewey, SD and Ruston, WA 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 Deer Lodge, MT, situated 600 miles from Dewey, SD and 574 miles from Ruston, WA. It would take 10 hours 41 mins to go from Dewey to Deer Lodge and 10 hours 26 mins to go from Ruston to Deer Lodge.