Distance between cities › USA › South Dakota › Dewey, SD › Distance from Dewey to Saint Marks Book Hotels

Distance from Dewey, SD to Saint Marks, FL

Distance

1,736 mi

Time

1 day 9 hours

Gas Cost

$162 - $315

There are 1,427.25 miles from Dewey to Saint Marks in southeast direction and 1,736 miles (2,793.82 kilometers) by car, following the I-80 route.

Dewey and Saint Marks are 1 day 9 hours far apart, if you drive non-stop .

This is the fastest route from Dewey, SD to Saint Marks, FL.

Please note the time difference between Dewey, SD and Saint Marks, FL is 2 hours. The current time in Dewey is 5:39 am and the current time in Saint Marks is 7:39 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Saint Marks, FL? Here there are some offers to rent a car in Dewey, SD

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Dewey »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 69.74 gallons of gas to cover the route between Dewey, SD and Saint Marks, FL.

The estimated cost of gas to go from Dewey to Saint Marks is $227.48.

During the route, an average car will release 1,366.26 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 Dewey, SD and Saint Marks, FL

If you want to meet halfway between Dewey, SD and Saint Marks, FL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.058609 and -93.692051, or 38º 3' 30.9924" N, 93º 41' 31.3836" W. This location is 868.21 miles away from Dewey, SD and Saint Marks, FL and it would take approximately 16 hours 51 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Osceola, MO, situated 836 miles from Dewey, SD and 902 miles from Saint Marks, FL. It would take 15 hours 56 mins to go from Dewey to Osceola and 17 hours 50 mins to go from Saint Marks to Osceola.