Distance between cities › USA › Mississippi › Jackson, MS › Distance from Jackson to Grassy Key Book Hotels

Distance from Jackson, MS to Grassy Key, FL

Distance

1,010 mi

Time

19 hours 11 mins

Gas Cost

$94 - $183

There are 764.28 miles from Jackson to Grassy Key in southeast direction and 1,010 miles (1,625.44 kilometers) by car, following the I-10 route.

Jackson and Grassy Key are 19 hours 11 mins far apart, if you drive non-stop .

This is the fastest route from Jackson, MS to Grassy Key, FL. The halfway point is Lee, FL.

Please note the time difference between Jackson, MS and Grassy Key, FL is 1 hour. The current time in Jackson is 12:49 am and the current time in Grassy Key is 1:49 am.

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Lowest Price Rental Cars in Jackson, MS

Planning on renting a car to go from Jackson, MS to Grassy Key, FL? Here there are some offers to rent a car in Jackson, MS

Small

From $14

Intermediate

From $18

Full-size

From $24

SUVs

From $28

Vans

From $40

Compare rental car prices in Jackson »

Gas Consumption and Emissions

A car with a fuel efficiency of MPG will need 40.56 gallons of gas to cover the route between Jackson, MS and Grassy Key, FL.

The estimated cost of gas to go from Jackson to Grassy Key is $132.30.

During the route, an average car will release 794.60 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 Jackson, MS and Grassy Key, FL

If you want to meet halfway between Jackson, MS and Grassy Key, FL or just make a stop in the middle of your trip, the exact coordinates of the halfway point of this route are 30.396378 and -83.305389, or 30º 23' 46.9608" N, 83º 18' 19.4004" W. This location is 504.94 miles away from Jackson, MS and Grassy Key, FL and it would take approximately 9 hours 35 mins to reach the halfway point from both locations.

Closest City or Town to Halfway Point

The closest town to the halfway point is Lee, FL, situated 490 miles from Jackson, MS and 523 miles from Grassy Key, FL. It would take 7 hours 55 mins to go from Jackson to Lee and 8 hours 3 mins to go from Grassy Key to Lee.