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

Distance from Dewey, SD to Mount Tom, MA

Distance

1,902 mi

Time

1 day 11 hours

Gas Cost

$177 - $345

There are 1,582.31 miles from Dewey to Mount Tom in east direction and 1,902 miles (3,060.97 kilometers) by car, following the I-90 and US-14 route.

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

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

Please note the time difference between Dewey, SD and Mount Tom, MA is 2 hours. The current time in Dewey is 7:23 am and the current time in Mount Tom is 9:23 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Mount Tom, 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 76.38 gallons of gas to cover the route between Dewey, SD and Mount Tom, MA.

The estimated cost of gas to go from Dewey to Mount Tom is $249.15.

During the route, an average car will release 1,496.40 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 Mount Tom, MA

If you want to meet halfway between Dewey, SD and Mount Tom, MA or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.164607 and -88.580931, or 42º 9' 52.5852" N, 88º 34' 51.3516" W. This location is 950.91 miles away from Dewey, SD and Mount Tom, MA and it would take approximately 17 hours 41 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Union, IL, situated 951 miles from Dewey, SD and 961 miles from Mount Tom, MA. It would take 17 hours 1 min to go from Dewey to Union and 18 hours 41 mins to go from Mount Tom to Union.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dewey, SD and Mount Tom, MA is Aurora, IL, situated 991 miles from Dewey, SD and 940 miles from Mount Tom, MA. It would take 17 hours 43 mins to go from Dewey to Aurora and 18 hours 15 mins to go from Mount Tom to Aurora.