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

Distance from Dewey, SD to Chilmark, MA

Distance

2,060 mi

Time

1 day 15 hours

Gas Cost

$192 - $373

There are 1,693.18 miles from Dewey to Chilmark in east direction and 2,060 miles (3,315.25 kilometers) by car and ferry, following the I-90 and US-14 route.

Dewey and Chilmark are 1 day 15 hours far apart, if you drive non-stop for 1 day 14 hours and take a ferry for 45 minutes .

This is the fastest route from Dewey, SD to Chilmark, MA.

Please note the time difference between Dewey, SD and Chilmark, MA is 2 hours. The current time in Dewey is 12:47 pm and the current time in Chilmark is 2:47 pm.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Chilmark, MA? 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 82.71 gallons of gas to cover the route between Dewey, SD and Chilmark, MA.

The estimated cost of gas to go from Dewey to Chilmark is $269.81.

During the route, an average car will release 1,620.53 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 Chilmark, MA

If you want to meet halfway between Dewey, SD and Chilmark, MA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.639251 and -87.50626, or 41º 38' 21.3036" N, 87º 30' 22.536" W. This location is 1,029.79 miles away from Dewey, SD and Chilmark, MA and it would take approximately 19 hours 30 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Calumet City, IL, situated 1,022 miles from Dewey, SD and 1,043 miles from Chilmark, MA. It would take 18 hours 29 mins to go from Dewey to Calumet City and 20 hours 39 mins to go from Chilmark to Calumet City.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dewey, SD and Chilmark, MA is Chicago, IL, situated 1,001 miles from Dewey, SD and 1,059 miles from Chilmark, MA. It would take 18 hours 2 mins to go from Dewey to Chicago and 21 hours 3 mins to go from Chilmark to Chicago.