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

Distance from Iona, SD to Harmony, RI

Distance

1,706 mi

Time

1 day 7 hours

Gas Cost

$159 - $309

There are 1,409.74 miles from Iona to Harmony in east direction and 1,706 miles (2,745.54 kilometers) by car, following the I-90 route.

Iona and Harmony are 1 day 7 hours far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Harmony, RI.

Please note the time difference between Iona, SD and Harmony, RI is 1 hour. The current time in Iona is 11:39 am and the current time in Harmony is 12:39 pm.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Harmony, RI? 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 68.50 gallons of gas to cover the route between Iona, SD and Harmony, RI.

The estimated cost of gas to go from Iona to Harmony is $223.45.

During the route, an average car will release 1,342.09 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 Harmony, RI

If you want to meet halfway between Iona, SD and Harmony, RI or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 41.733096 and -86.038464, or 41º 43' 59.1456" N, 86º 2' 18.4704" W. This location is 852.85 miles away from Iona, SD and Harmony, RI and it would take approximately 15 hours 54 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Granger, IN, situated 846 miles from Iona, SD and 867 miles from Harmony, RI. It would take 15 hours 40 mins to go from Iona to Granger and 16 hours 21 mins to go from Harmony to Granger.

Major City Closest to Halfway Point

The major city closest to the halfway point between Iona, SD and Harmony, RI is South Bend, IN, situated 839 miles from Iona, SD and 873 miles from Harmony, RI. It would take 15 hours 35 mins to go from Iona to South Bend and 16 hours 29 mins to go from Harmony to South Bend.