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

Distance from Dewey, SD to Conway, MA

Distance

1,891 mi

Time

1 day 11 hours

Gas Cost

$176 - $343

There are 1,575.40 miles from Dewey to Conway in east direction and 1,891 miles (3,043.27 kilometers) by car, following the I-90 and US-14 route.

Dewey and Conway are 1 day 11 hours far apart, if you drive non-stop .

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

Please note the time difference between Dewey, SD and Conway, MA is 2 hours. The current time in Dewey is 11:34 am and the current time in Conway is 1:34 pm.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Conway, 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 75.94 gallons of gas to cover the route between Dewey, SD and Conway, MA.

The estimated cost of gas to go from Dewey to Conway is $247.72.

During the route, an average car will release 1,487.84 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 Conway, MA

If you want to meet halfway between Dewey, SD and Conway, MA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.195339 and -88.669079, or 42º 11' 43.2204" N, 88º 40' 8.6844" W. This location is 945.47 miles away from Dewey, SD and Conway, MA and it would take approximately 17 hours 51 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Marengo, IL, situated 944 miles from Dewey, SD and 952 miles from Conway, MA. It would take 16 hours 55 mins to go from Dewey to Marengo and 19 hours 3 mins to go from Conway to Marengo.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dewey, SD and Conway, MA is Rockford, IL, situated 928 miles from Dewey, SD and 977 miles from Conway, MA. It would take 16 hours 36 mins to go from Dewey to Rockford and 19 hours 32 mins to go from Conway to Rockford.