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

Distance from Mount Vernon, SD to Irene, SD

Distance

100 mi

Time

1 hour 52 mins

Gas Cost

$9 - $17

There are 70.32 miles from Mount Vernon to Irene in southeast direction and 100 miles (160.93 kilometers) by car, following the I-90 route.

Mount Vernon and Irene are 1 hour 52 mins far apart, if you drive non-stop .

This is the fastest route from Mount Vernon, SD to Irene, SD. The halfway point is Salem, SD.

Mount Vernon, SD and Irene, SD are in the same time zone (CDT). Current time in both locations is 8:30 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 Irene, 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 4.03 gallons of gas to cover the route between Mount Vernon, SD and Irene, SD.

The estimated cost of gas to go from Mount Vernon to Irene is $12.64.

During the route, an average car will release 78.99 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 Irene, SD

If you want to meet halfway between Mount Vernon, SD and Irene, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.664379 and -97.345421, or 43º 39' 51.7644" N, 97º 20' 43.5156" W. This location is 50.20 miles away from Mount Vernon, SD and Irene, SD and it would take approximately 56 minutes to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Salem, SD, situated 50 miles from Mount Vernon, SD and 65 miles from Irene, SD. It would take 44 minutes to go from Mount Vernon to Salem and 1 hour 29 mins to go from Irene to Salem.