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

Distance from Dewey, SD to Wallace, SD

Distance

492 mi

Time

9 hours 2 mins

Gas Cost

$44 - $86

There are 341.80 miles from Dewey to Wallace in northeast direction and 492 miles (791.80 kilometers) by car, following the I-90 and US-14 route.

Dewey and Wallace are 9 hours 2 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Wallace, SD. The halfway point is Kennebec, SD.

Please note the time difference between Dewey, SD and Wallace, SD is 1 hour. The current time in Dewey is 3:01 am and the current time in Wallace is 4:01 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Wallace, 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 19.76 gallons of gas to cover the route between Dewey, SD and Wallace, SD.

The estimated cost of gas to go from Dewey to Wallace is $61.94.

During the route, an average car will release 387.06 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 Wallace, SD

If you want to meet halfway between Dewey, SD and Wallace, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.879169 and -99.762657, or 43º 52' 45.0084" N, 99º 45' 45.5652" W. This location is 245.96 miles away from Dewey, SD and Wallace, SD and it would take approximately 4 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 Kennebec, SD, situated 269 miles from Dewey, SD and 284 miles from Wallace, SD. It would take 4 hours 25 mins to go from Dewey to Kennebec and 3 hours 49 mins to go from Wallace to Kennebec.