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

Distance from Dewey, SD to Shallmar, MD

Distance

1,583 mi

Time

1 day 5 hours

Gas Cost

$148 - $287

There are 1,312.44 miles from Dewey to Shallmar in southeast direction and 1,583 miles (2,547.59 kilometers) by car, following the I-90 and US-14 route.

Dewey and Shallmar are 1 day 5 hours far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Shallmar, MD.

Please note the time difference between Dewey, SD and Shallmar, MD is 2 hours. The current time in Dewey is 4:37 am and the current time in Shallmar is 6:37 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Shallmar, MD? 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 63.59 gallons of gas to cover the route between Dewey, SD and Shallmar, MD.

The estimated cost of gas to go from Dewey to Shallmar is $207.42.

During the route, an average car will release 1,245.81 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 Shallmar, MD

If you want to meet halfway between Dewey, SD and Shallmar, MD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.960511 and -90.498008, or 43º 57' 37.8396" N, 90º 29' 52.8288" W. This location is 791.67 miles away from Dewey, SD and Shallmar, MD and it would take approximately 14 hours 33 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Tomah, WI, situated 763 miles from Dewey, SD and 823 miles from Shallmar, MD. It would take 13 hours 36 mins to go from Dewey to Tomah and 15 hours 37 mins to go from Shallmar to Tomah.