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

Distance from Dewey, SD to Augusta, IL

Distance

935 mi

Time

17 hours 10 mins

Gas Cost

$87 - $169

There are 710.08 miles from Dewey to Augusta in southeast direction and 935 miles (1,504.74 kilometers) by car, following the I-90 and US-14 route.

Dewey and Augusta are 17 hours 10 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Augusta, IL. The halfway point is Worthing, SD.

Please note the time difference between Dewey, SD and Augusta, IL is 1 hour. The current time in Dewey is 3:08 am and the current time in Augusta is 4:08 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Augusta, IL? 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 37.53 gallons of gas to cover the route between Dewey, SD and Augusta, IL.

The estimated cost of gas to go from Dewey to Augusta is $122.44.

During the route, an average car will release 735.37 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 Augusta, IL

If you want to meet halfway between Dewey, SD and Augusta, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.388283 and -96.780121, or 43º 23' 17.8188" N, 96º 46' 48.4356" W. This location is 467.30 miles away from Dewey, SD and Augusta, IL and it would take approximately 8 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 Worthing, SD, situated 450 miles from Dewey, SD and 486 miles from Augusta, IL. It would take 6 hours 46 mins to go from Dewey to Worthing and 7 hours 49 mins to go from Augusta to Worthing.

Major City Closest to Halfway Point

The major city closest to the halfway point between Dewey, SD and Augusta, IL is Sioux Falls, SD, situated 436 miles from Dewey, SD and 501 miles from Augusta, IL. It would take 6 hours 34 mins to go from Dewey to and 8 hours 2 mins to go from Augusta to Sioux Falls.