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

Distance from Mount Vernon, SD to Black Eagle, MT

Distance

797 mi

Time

14 hours 4 mins

Gas Cost

$74 - $144

There are 680.99 miles from Mount Vernon to Black Eagle in northwest direction and 797 miles (1,282.65 kilometers) by car, following the I-90 route.

Mount Vernon and Black Eagle are 14 hours 4 mins far apart, if you drive non-stop .

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

Please note the time difference between Mount Vernon, SD and Black Eagle, MT is 1 hour. The current time in Mount Vernon is 6:37 am and the current time in Black Eagle is 5:37 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 Black Eagle, 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 32 gallons of gas to cover the route between Mount Vernon, SD and Black Eagle, MT.

The estimated cost of gas to go from Mount Vernon to Black Eagle is $104.39.

During the route, an average car will release 627 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 Black Eagle, MT

If you want to meet halfway between Mount Vernon, SD and Black Eagle, MT or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 45.328853 and -105.183231, or 45º 19' 43.8708" N, 105º 10' 59.6316" W. This location is 398.43 miles away from Mount Vernon, SD and Black Eagle, MT and it would take approximately 7 hours 2 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Boyes, MT, situated 388 miles from Mount Vernon, SD and 409 miles from Black Eagle, MT. It would take 6 hours 33 mins to go from Mount Vernon to Boyes and 7 hours 31 mins to go from Black Eagle to Boyes.