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

Distance from Dewey, SD to McCool, MS

Distance

1,340 mi

Time

1 day 2 hours

Gas Cost

$125 - $243

There are 1,066.21 miles from Dewey to McCool in southeast direction and 1,340 miles (2,156.52 kilometers) by car, following the I-80 route.

Dewey and McCool are 1 day 2 hours far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to McCool, MS. The halfway point is Mound City, MO.

Please note the time difference between Dewey, SD and McCool, MS is 1 hour. The current time in Dewey is 3:05 am and the current time in McCool is 4:05 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to McCool, 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 53.82 gallons of gas to cover the route between Dewey, SD and McCool, MS.

The estimated cost of gas to go from Dewey to McCool is $175.55.

During the route, an average car will release 1,054.38 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 McCool, MS

If you want to meet halfway between Dewey, SD and McCool, MS or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.142078 and -95.261292, or 40º 8' 31.4808" N, 95º 15' 40.6512" W. This location is 670.02 miles away from Dewey, SD and McCool, MS and it would take approximately 13 hours 6 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Mound City, MO, situated 705 miles from Dewey, SD and 761 miles from McCool, MS. It would take 10 hours 23 mins to go from Dewey to Mound City and 11 hours 56 mins to go from McCool to Mound City.