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

Distance from Mount Vernon, SD to Harlem, MT

Distance

780 mi

Time

14 hours 37 mins

Gas Cost

$73 - $141

There are 603.34 miles from Mount Vernon to Harlem in northwest direction and 780 miles (1,255.29 kilometers) by car, following the I-90 route.

Mount Vernon and Harlem are 14 hours 37 mins far apart, if you drive non-stop .

This is the fastest route from Mount Vernon, SD to Harlem, MT.

Please note the time difference between Mount Vernon, SD and Harlem, MT is 1 hour. The current time in Mount Vernon is 6:44 am and the current time in Harlem is 5:44 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 Harlem, MT? 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 31.33 gallons of gas to cover the route between Mount Vernon, SD and Harlem, MT.

The estimated cost of gas to go from Mount Vernon to Harlem is $102.21.

During the route, an average car will release 613.91 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 Mount Vernon, SD and Harlem, MT

If you want to meet halfway between Mount Vernon, SD and Harlem, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.171596 and -104.776243, or 45º 10' 17.7456" N, 104º 46' 34.4748" W. This location is 390.11 miles away from Mount Vernon, SD and Harlem, MT and it would take approximately 7 hours 18 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Hammond, MT, situated 382 miles from Mount Vernon, SD and 399 miles from Harlem, MT. It would take 6 hours 26 mins to go from Mount Vernon to Hammond and 8 hours 11 mins to go from Harlem to Hammond.