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

Distance from Dewey, SD to Ancona, IL

Distance

997 mi

Time

17 hours 58 mins

Gas Cost

$93 - $181

There are 792.99 miles from Dewey to Ancona in southeast direction and 997 miles (1,604.52 kilometers) by car, following the I-90 and US-14 route.

Dewey and Ancona are 17 hours 58 mins far apart, if you drive non-stop .

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

Please note the time difference between Dewey, SD and Ancona, IL is 1 hour. The current time in Dewey is 4:38 am and the current time in Ancona is 5:38 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Ancona, 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 40.06 gallons of gas to cover the route between Dewey, SD and Ancona, IL.

The estimated cost of gas to go from Dewey to Ancona is $130.67.

During the route, an average car will release 784.80 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 Ancona, IL

If you want to meet halfway between Dewey, SD and Ancona, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.675955 and -96.685379, or 42º 40' 33.438" N, 96º 41' 7.3644" W. This location is 498.71 miles away from Dewey, SD and Ancona, IL and it would take approximately 8 hours 59 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Elk Point, SD, situated 496 miles from Dewey, SD and 502 miles from Ancona, IL. It would take 8 hours 44 mins to go from Dewey to Elk Point and 9 hours 19 mins to go from Ancona to Elk Point.