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

Distance from Dewey, SD to Ada, MI

Distance

1,065 mi

Time

20 hours 16 mins

Gas Cost

$99 - $193

There are 932.27 miles from Dewey to Ada in east direction and 1,065 miles (1,713.95 kilometers) by car and ferry, following the I-90 and US-14 route.

Dewey and Ada are 20 hours 16 mins far apart, if you drive non-stop for 17 hours 45 mins and take a ferry for 2 hours 30 mins .

This is the fastest route from Dewey, SD to Ada, MI.

Please note the time difference between Dewey, SD and Ada, MI is 2 hours. The current time in Dewey is 3:12 am and the current time in Ada is 5:12 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Ada, MI? 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 42.78 gallons of gas to cover the route between Dewey, SD and Ada, MI.

The estimated cost of gas to go from Dewey to Ada is $139.54.

During the route, an average car will release 838.10 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 Ada, MI

If you want to meet halfway between Dewey, SD and Ada, MI or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.655815 and -94.768466, or 43º 39' 20.934" N, 94º 46' 6.4776" W. This location is 532.58 miles away from Dewey, SD and Ada, MI and it would take approximately 10 hours 8 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sherburn, MN, situated 533 miles from Dewey, SD and 534 miles from Ada, MI. It would take 9 hours 28 mins to go from Dewey to Sherburn and 10 hours 52 mins to go from Ada to Sherburn.