Distance between cities › USA › South Dakota › Iona, SD › Distance from Iona to Mattoon Book Hotels

Distance from Iona, SD to Mattoon, IL

Distance

804 mi

Time

15 hours 24 mins

Gas Cost

$75 - $146

There are 636.93 miles from Iona to Mattoon in southeast direction and 804 miles (1,293.91 kilometers) by car, following the I-80 route.

Iona and Mattoon are 15 hours 24 mins far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Mattoon, IL.

Iona, SD and Mattoon, IL are in the same time zone (CDT). Current time in both locations is 2:23 pm.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Mattoon, IL? Here there are some offers to rent a car in Iona, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Iona »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 32.31 gallons of gas to cover the route between Iona, SD and Mattoon, IL.

The estimated cost of gas to go from Iona to Mattoon is $105.39.

During the route, an average car will release 632.97 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 Iona, SD and Mattoon, IL

If you want to meet halfway between Iona, SD and Mattoon, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.652074 and -93.736176, or 41º 39' 7.4664" N, 93º 44' 10.2336" W. This location is 402.23 miles away from Iona, SD and Mattoon, IL and it would take approximately 7 hours 42 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Johnston, IA, situated 404 miles from Iona, SD and 404 miles from Mattoon, IL. It would take 8 hours 11 mins to go from Iona to Johnston and 7 hours 23 mins to go from Mattoon to Johnston.

Major City Closest to Halfway Point

The major city closest to the halfway point between Iona, SD and Mattoon, IL is Des Moines, IA, situated 404 miles from Iona, SD and 401 miles from Mattoon, IL. It would take 8 hours 9 mins to go from Iona to Des Moines and 7 hours 19 mins to go from Mattoon to Des Moines.