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

Distance from Iona, SD to Patapsco, MD

Distance

1,412 mi

Time

1 day 2 hours

Gas Cost

$132 - $256

There are 1,193.37 miles from Iona to Patapsco in southeast direction and 1,412 miles (2,272.39 kilometers) by car, following the I-90 route.

Iona and Patapsco are 1 day 2 hours far apart, if you drive non-stop .

This is the fastest route from Iona, SD to Patapsco, MD. The halfway point is Sleepy Hollow, IL.

Please note the time difference between Iona, SD and Patapsco, MD is 1 hour. The current time in Iona is 10:07 am and the current time in Patapsco is 11:07 am.

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Lowest Price Rental Cars in Iona, SD

Planning on renting a car to go from Iona, SD to Patapsco, 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 56.71 gallons of gas to cover the route between Iona, SD and Patapsco, MD.

The estimated cost of gas to go from Iona to Patapsco is $184.99.

During the route, an average car will release 1,111.05 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 Patapsco, MD

If you want to meet halfway between Iona, SD and Patapsco, MD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 42.106731 and -88.333855, or 42º 6' 24.2316" N, 88º 20' 1.878" W. This location is 706.03 miles away from Iona, SD and Patapsco, MD and it would take approximately 13 hours 19 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Sleepy Hollow, IL, situated 709 miles from Iona, SD and 748 miles from Patapsco, MD. It would take 10 hours 37 mins to go from Iona to Sleepy Hollow and 11 hours 32 mins to go from Patapsco to Sleepy Hollow.

Major City Closest to Halfway Point

The major city closest to the halfway point between Iona, SD and Patapsco, MD is Aurora, IL, situated 736 miles from Iona, SD and 747 miles from Patapsco, MD. It would take 11 hours 1 min to go from Iona to and 11 hours 34 mins to go from Patapsco to Aurora.