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

Distance from Dewey, SD to Au Sable, MI

Distance

1,243 mi

Time

1 day

Gas Cost

$116 - $225

There are 1,028.81 miles from Dewey to Au Sable in east direction and 1,243 miles (2,000.41 kilometers) by car and ferry, following the I-90 and US-14 route.

Dewey and Au Sable are 1 day far apart, if you drive non-stop for 21 hours 42 mins and take a ferry for 2 hours 30 mins .

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

Please note the time difference between Dewey, SD and Au Sable, MI is 2 hours. The current time in Dewey is 3:35 am and the current time in Au Sable is 5:35 am.

Any questions or tips to share?

Share with fellow travellers any question or tips about the route from Dewey, SD to Au Sable, MI:

Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Au Sable, 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 49.91 gallons of gas to cover the route between Dewey, SD and Au Sable, MI.

The estimated cost of gas to go from Dewey to Au Sable is $162.80.

During the route, an average car will release 977.81 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 Au Sable, MI

If you want to meet halfway between Dewey, SD and Au Sable, MI or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.663594 and -93.202738, or 43º 39' 48.9384" N, 93º 12' 9.8568" W. This location is 621.36 miles away from Dewey, SD and Au Sable, MI and it would take approximately 12 hours 6 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Hayward, MN, situated 609 miles from Dewey, SD and 636 miles from Au Sable, MI. It would take 10 hours 50 mins to go from Dewey to Hayward and 13 hours 27 mins to go from Au Sable to Hayward.