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

Distance from Dewey, SD to River Forest, IL

Distance

993 mi

Time

17 hours 50 mins

Gas Cost

$93 - $180

There are 830.12 miles from Dewey to River Forest in east direction and 993 miles (1,598.08 kilometers) by car, following the I-90 and US-14 route.

Dewey and River Forest are 17 hours 50 mins far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to River Forest, IL.

Please note the time difference between Dewey, SD and River Forest, IL is 1 hour. The current time in Dewey is 6:04 am and the current time in River Forest is 7:04 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to River Forest, 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 39.87 gallons of gas to cover the route between Dewey, SD and River Forest, IL.

The estimated cost of gas to go from Dewey to River Forest is $130.06.

During the route, an average car will release 781.15 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 River Forest, IL

If you want to meet halfway between Dewey, SD and River Forest, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.637699 and -95.611782, or 43º 38' 15.7164" N, 95º 36' 42.4152" W. This location is 496.39 miles away from Dewey, SD and River Forest, IL and it would take approximately 8 hours 55 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Worthington, MN, situated 489 miles from Dewey, SD and 506 miles from River Forest, IL. It would take 8 hours 41 mins to go from Dewey to Worthington and 9 hours 14 mins to go from River Forest to Worthington.