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

Distance from Dewey, SD to Saint Augustine, FL

Distance

1,922 mi

Time

1 day 11 hours

Gas Cost

$179 - $348

There are 1,563.33 miles from Dewey to Saint Augustine in southeast direction and 1,922 miles (3,093.16 kilometers) by car, following the I-80 route.

Dewey and Saint Augustine are 1 day 11 hours far apart, if you drive non-stop .

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

Please note the time difference between Dewey, SD and Saint Augustine, FL is 2 hours. The current time in Dewey is 7:11 am and the current time in Saint Augustine is 9:11 am.

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Lowest Price Rental Cars in Dewey, SD

Planning on renting a car to go from Dewey, SD to Saint Augustine, 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 77.19 gallons of gas to cover the route between Dewey, SD and Saint Augustine, FL.

The estimated cost of gas to go from Dewey to Saint Augustine is $251.80.

During the route, an average car will release 1,512.35 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 Augustine, FL

If you want to meet halfway between Dewey, SD and Saint Augustine, FL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 38.886476 and -91.410434, or 38º 53' 11.3136" N, 91º 24' 37.5624" W. This location is 961.04 miles away from Dewey, SD and Saint Augustine, FL and it would take approximately 17 hours 57 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is High Hill, MO, situated 916 miles from Dewey, SD and 1,007 miles from Saint Augustine, FL. It would take 17 hours 15 mins to go from Dewey to High Hill and 18 hours 42 mins to go from Saint Augustine to High Hill.