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

Distance from Iona, SD to Thayer, IL

Distance

728 mi

Time

14 hours 20 mins

Gas Cost

$68 - $132

There are 571.58 miles from Iona to Thayer in southeast direction and 728 miles (1,171.60 kilometers) by car, following the US-36 route.

Iona and Thayer are 14 hours 20 mins far apart, if you drive non-stop .

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

Iona, SD and Thayer, IL are in the same time zone (CDT). Current time in both locations is 11:37 am.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Thayer, 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 29.23 gallons of gas to cover the route between Iona, SD and Thayer, IL.

The estimated cost of gas to go from Iona to Thayer is $95.35.

During the route, an average car will release 572.66 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 Thayer, IL

If you want to meet halfway between Iona, SD and Thayer, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.289726 and -95.482451, or 40º 17' 23.0136" N, 95º 28' 56.8236" W. This location is 363.90 miles away from Iona, SD and Thayer, IL and it would take approximately 7 hours 10 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Corning, MO, situated 379 miles from Iona, SD and 350 miles from Thayer, IL. It would take 7 hours 42 mins to go from Iona to Corning and 6 hours 42 mins to go from Thayer to Corning.