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

Distance from Dewey, SD to Mattson, MS

Distance

1,285 mi

Time

1 day

Gas Cost

$120 - $233

There are 975.15 miles from Dewey to Mattson in southeast direction and 1,285 miles (2,068.01 kilometers) by car, following the I-40 route.

Dewey and Mattson are 1 day far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Mattson, MS.

Please note the time difference between Dewey, SD and Mattson, MS is 1 hour. The current time in Dewey is 4:57 am and the current time in Mattson is 5:57 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Mattson, MS? 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 51.60 gallons of gas to cover the route between Dewey, SD and Mattson, MS.

The estimated cost of gas to go from Dewey to Mattson is $168.32.

During the route, an average car will release 1,010.97 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 Mattson, MS

If you want to meet halfway between Dewey, SD and Mattson, MS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.444234 and -97.621042, or 38º 26' 39.2424" N, 97º 37' 15.7512" W. This location is 642.43 miles away from Dewey, SD and Mattson, MS and it would take approximately 12 hours 4 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is McPherson, KS, situated 639 miles from Dewey, SD and 651 miles from Mattson, MS. It would take 12 hours 32 mins to go from Dewey to McPherson and 11 hours 41 mins to go from Mattson to McPherson.