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

Distance from Dewey, SD to Royal, IL

Distance

1,089 mi

Time

19 hours 28 mins

Gas Cost

$101 - $197

There are 856.84 miles from Dewey to Royal in southeast direction and 1,089 miles (1,752.58 kilometers) by car, following the I-90 and US-14 route.

Dewey and Royal are 19 hours 28 mins far apart, if you drive non-stop .

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

Please note the time difference between Dewey, SD and Royal, IL is 1 hour. The current time in Dewey is 9:10 am and the current time in Royal is 10:10 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Royal, 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 43.73 gallons of gas to cover the route between Dewey, SD and Royal, IL.

The estimated cost of gas to go from Dewey to Royal is $142.66.

During the route, an average car will release 856.83 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 Royal, IL

If you want to meet halfway between Dewey, SD and Royal, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.15808 and -96.223852, or 42º 9' 29.088" N, 96º 13' 25.8672" W. This location is 544.48 miles away from Dewey, SD and Royal, IL and it would take approximately 9 hours 44 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Whiting, IA, situated 547 miles from Dewey, SD and 548 miles from Royal, IL. It would take 9 hours 39 mins to go from Dewey to Whiting and 10 hours to go from Royal to Whiting.