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

Distance from Iona, SD to Mount Prospect, IL

Distance

726 mi

Time

13 hours 13 mins

Gas Cost

$68 - $132

There are 590.42 miles from Iona to Mount Prospect in east direction and 726 miles (1,168.38 kilometers) by car, following the I-90 route.

Iona and Mount Prospect are 13 hours 13 mins far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Mount Prospect, IL. The halfway point is Albert Lea, MN.

Iona, SD and Mount Prospect, IL are in the same time zone (CDT). Current time in both locations is 2:24 pm.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Mount Prospect, 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 29.17 gallons of gas to cover the route between Iona, SD and Mount Prospect, IL.

The estimated cost of gas to go from Iona to Mount Prospect is $95.15.

During the route, an average car will release 571.47 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 Mount Prospect, IL

If you want to meet halfway between Iona, SD and Mount Prospect, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.676556 and -93.336143, or 43º 40' 35.6016" N, 93º 20' 10.1148" W. This location is 363.15 miles away from Iona, SD and Mount Prospect, IL and it would take approximately 6 hours 36 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Albert Lea, MN, situated 348 miles from Iona, SD and 381 miles from Mount Prospect, IL. It would take 5 hours 23 mins to go from Iona to Albert Lea and 5 hours 38 mins to go from Mount Prospect to Albert Lea.