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

Distance from Dewey, SD to Alpena, SD

Distance

381 mi

Time

7 hours 11 mins

Gas Cost

$34 - $66

There are 286.25 miles from Dewey to Alpena in east direction and 381 miles (613.16 kilometers) by car, following the I-90 and US-14 route.

Dewey and Alpena are 7 hours 11 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Alpena, SD. The halfway point is Belvidere, SD.

Please note the time difference between Dewey, SD and Alpena, SD is 1 hour. The current time in Dewey is 12:20 am and the current time in Alpena is 1:20 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Alpena, SD? 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 15.32 gallons of gas to cover the route between Dewey, SD and Alpena, SD.

The estimated cost of gas to go from Dewey to Alpena is $48.02.

During the route, an average car will release 300.12 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 $3.14 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Dewey, SD and Alpena, SD

If you want to meet halfway between Dewey, SD and Alpena, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.842491 and -101.248444, or 43º 50' 32.9676" N, 101º 14' 54.3984" W. This location is 190.71 miles away from Dewey, SD and Alpena, SD and it would take approximately 3 hours 35 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Belvidere, SD, situated 197 miles from Dewey, SD and 186 miles from Alpena, SD. It would take 3 hours 30 mins to go from Dewey to Belvidere and 2 hours 52 mins to go from Alpena to Belvidere.