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

Distance from Mount Vernon, SD to Hammon, OK

Distance

640 mi

Time

13 hours 31 mins

Gas Cost

$60 - $116

There are 561.28 miles from Mount Vernon to Hammon in south direction and 640 miles (1,029.98 kilometers) by car, following the US-183 route.

Mount Vernon and Hammon are 13 hours 31 mins far apart, if you drive non-stop .

This is the fastest route from Mount Vernon, SD to Hammon, OK.

Mount Vernon, SD and Hammon, OK are in the same time zone (CDT). Current time in both locations is 12:27 pm.

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Lowest Price Rental Cars in Mount Vernon, SD

Planning on renting a car to go from Mount Vernon, SD to Hammon, OK? 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 25.69 gallons of gas to cover the route between Mount Vernon, SD and Hammon, OK.

The estimated cost of gas to go from Mount Vernon to Hammon is $83.79.

During the route, an average car will release 503.24 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 Hammon, OK

If you want to meet halfway between Mount Vernon, SD and Hammon, OK or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 40.12632 and -99.367642, or 40º 7' 34.752" N, 99º 22' 3.5112" W. This location is 319.79 miles away from Mount Vernon, SD and Hammon, OK and it would take approximately 6 hours 45 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Alma, NE, situated 313 miles from Mount Vernon, SD and 327 miles from Hammon, OK. It would take 6 hours 27 mins to go from Mount Vernon to Alma and 7 hours 6 mins to go from Hammon to Alma.