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

Distance from Mount Vernon, SD to Saint Onge, SD

Distance

304 mi

Time

4 hours 54 mins

Gas Cost

$27 - $53

There are 276.85 miles from Mount Vernon to Saint Onge in northwest direction and 304 miles (489.24 kilometers) by car, following the I-90 route.

Mount Vernon and Saint Onge are 4 hours 54 mins far apart, if you drive non-stop .

This is the fastest route from Mount Vernon, SD to Saint Onge, SD. The halfway point is Belvidere, SD.

Please note the time difference between Mount Vernon, SD and Saint Onge, SD is 1 hour. The current time in Mount Vernon is 11:13 am and the current time in Saint Onge is 10:13 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 Saint Onge, 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 12.20 gallons of gas to cover the route between Mount Vernon, SD and Saint Onge, SD.

The estimated cost of gas to go from Mount Vernon to Saint Onge is $38.24.

During the route, an average car will release 238.96 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 Saint Onge, SD

If you want to meet halfway between Mount Vernon, SD and Saint Onge, SD or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 43.893494 and -101.101524, or 43º 53' 36.5784" N, 101º 6' 5.4864" W. This location is 151.85 miles away from Mount Vernon, SD and Saint Onge, SD and it would take approximately 2 hours 27 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Belvidere, SD, situated 158 miles from Mount Vernon, SD and 147 miles from Saint Onge, SD. It would take 2 hours 4 mins to go from Mount Vernon to Belvidere and 1 hour 59 mins to go from Saint Onge to Belvidere.