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

Distance from Iona, SD to Frontenac, MN

Distance

449 mi

Time

8 hours 29 mins

Gas Cost

$42 - $81

There are 355.89 miles from Iona to Frontenac in east direction and 449 miles (722.60 kilometers) by car, following the I-90 route.

Iona and Frontenac are 8 hours 29 mins far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Frontenac, MN.

Iona, SD and Frontenac, MN are in the same time zone (CDT). Current time in both locations is 10:10 am.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Frontenac, MN? 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 18.01 gallons of gas to cover the route between Iona, SD and Frontenac, MN.

The estimated cost of gas to go from Iona to Frontenac is $58.76.

During the route, an average car will release 352.91 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 Frontenac, MN

If you want to meet halfway between Iona, SD and Frontenac, MN or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.637369 and -95.826094, or 43º 38' 14.5284" N, 95º 49' 33.9384" W. This location is 224.26 miles away from Iona, SD and Frontenac, MN and it would take approximately 4 hours 14 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Rushmore, MN, situated 224 miles from Iona, SD and 228 miles from Frontenac, MN. It would take 4 hours 13 mins to go from Iona to Rushmore and 4 hours 25 mins to go from Frontenac to Rushmore.