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

Distance from Mount Vernon, SD to Iona, SD

Distance

98 mi

Time

2 hours 8 mins

Gas Cost

$9 - $17

There are 58.12 miles from Mount Vernon to Iona in west direction and 98 miles (157.72 kilometers) by car, following the I-90 route.

Mount Vernon and Iona are 2 hours 8 mins far apart, if you drive non-stop .

This is the fastest route from Mount Vernon, SD to Iona, SD. The halfway point is Pukwana, SD.

Mount Vernon, SD and Iona, SD are in the same time zone (CDT). Current time in both locations is 9:45 am.

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Lowest Price Rental Cars in Mount Vernon, SD

Planning on renting a car to go from Mount Vernon, SD to Iona, SD? Here there are some offers to rent a car in Mount Vernon, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Mount Vernon »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 3.92 gallons of gas to cover the route between Mount Vernon, SD and Iona, SD.

The estimated cost of gas to go from Mount Vernon to Iona is $12.29.

During the route, an average car will release 76.83 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 $3.14 per gallon of regular gas. Price last updated on March 12, 2026.
Read more about our CO₂ calculation.

Halfway Point Between Mount Vernon, SD and Iona, SD

If you want to meet halfway between Mount Vernon, SD and Iona, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.752583 and -99.136932, or 43º 45' 9.2988" N, 99º 8' 12.9552" W. This location is 48.82 miles away from Mount Vernon, SD and Iona, SD and it would take approximately 1 hour 4 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Pukwana, SD, situated 50 miles from Mount Vernon, SD and 52 miles from Iona, SD. It would take 43 minutes to go from Mount Vernon to Pukwana and 1 hour 20 mins to go from Iona to Pukwana.