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

Distance from Iona, SD to Conowingo, MD

Distance

1,465 mi

Time

1 day 3 hours

Gas Cost

$136 - $265

There are 1,226.50 miles from Iona to Conowingo in southeast direction and 1,465 miles (2,357.69 kilometers) by car, following the I-90 route.

Iona and Conowingo are 1 day 3 hours far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Conowingo, MD. The halfway point is Schaumburg, IL.

Please note the time difference between Iona, SD and Conowingo, MD is 1 hour. The current time in Iona is 7:40 am and the current time in Conowingo is 8:40 am.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Conowingo, MD? 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 58.82 gallons of gas to cover the route between Iona, SD and Conowingo, MD.

The estimated cost of gas to go from Iona to Conowingo is $191.87.

During the route, an average car will release 1,152.37 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 Conowingo, MD

If you want to meet halfway between Iona, SD and Conowingo, MD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.049782 and -88.082764, or 42º 2' 59.2152" N, 88º 4' 57.9504" W. This location is 732.29 miles away from Iona, SD and Conowingo, MD and it would take approximately 13 hours 35 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest city to the halfway point is Schaumburg, IL, situated 719 miles from Iona, SD and 756 miles from Conowingo, MD. It would take 10 hours 45 mins to go from Iona to Schaumburg and 11 hours 41 mins to go from Conowingo to Schaumburg.

Major City Closest to Halfway Point

The major city closest to the halfway point between Iona, SD and Conowingo, MD is Chicago, IL, situated 745 miles from Iona, SD and 726 miles from Conowingo, MD. It would take 11 hours 9 mins to go from Iona to and 11 hours 12 mins to go from Conowingo to Chicago.