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

Distance from Iona, SD to Markham, IL

Distance

761 mi

Time

13 hours 57 mins

Gas Cost

$71 - $138

There are 611.22 miles from Iona to Markham in southeast direction and 761 miles (1,224.71 kilometers) by car, following the I-90 route.

Iona and Markham are 13 hours 57 mins far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Markham, IL. The halfway point is Oakland, MN.

Iona, SD and Markham, 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 Markham, 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 30.54 gallons of gas to cover the route between Iona, SD and Markham, IL.

The estimated cost of gas to go from Iona to Markham is $99.63.

During the route, an average car will release 598.42 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 Markham, IL

If you want to meet halfway between Iona, SD and Markham, IL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.675694 and -93.089218, or 43º 40' 32.4984" N, 93º 5' 21.1848" W. This location is 380.27 miles away from Iona, SD and Markham, IL and it would take approximately 6 hours 58 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Oakland, MN, situated 363 miles from Iona, SD and 405 miles from Markham, IL. It would take 5 hours 43 mins to go from Iona to Oakland and 6 hours 11 mins to go from Markham to Oakland.