How far is Key West, FL from St. Petersburg, FL?

Flight Distance

229.04 mi
368.61 km · 00h 27m flight

Driving Distance

409.91 mi
659.69 km · 06h 48m drive

Gas Cost Calculator

Key West

#1 Key West

County seat city of Monroe County, Florida, United States; island in Florida Keys

Population23,767
Coordinates24.5552400, -81.7816300
Altitude1
CountryUnited States
St. Petersburg

#2 St. Petersburg

The second most populous city in Florida. It is located on the Gulf Coast of Florida. St. Petersburg is known for its beaches, its many museums, and its many attractions, such as the Salvador Dali Museum and the St. Petersburg Museum of Fine Arts.

Population253,693
Coordinates27.7708600, -82.6792700
Altitude13
CountryUnited States
Start: George Street (-81.781612, 24.555252)
End: US 19 (-82.679372, 27.77086)

Estimated Travel Time

Distance: 660 km by road

SpeedTime
30 mph (48.3 km/h)13h 39m
40 mph (64.37 km/h)10h 14m
50 mph (80.47 km/h)08h 11m
60 mph (96.56 km/h)06h 49m
70 mph (112.65 km/h)05h 51m
80 mph (129 km/h)05h 06m

Gas Consumption

Fuel needed: 54.75 L (14.46 gal). Cost: $59.98

GasMidPremDiesel
$/gal$4.15$4.6$4.9$4.35
Total$59.98$66.46$70.8$62.9

Prices in Florida · Apr 09, 2026

There is no time difference between Key West and St. Petersburg. The current time is 10:31:30.

Gas Consumption

A car with 8.3 l/100 km efficiency needs 54.75 liters (14.46 gal). Cost: $59.98 (diesel $62.9).

GasMidPremiumDiesel
$/Gallon$4.15$4.6$4.9$4.35
Total$59.98$66.46$70.8$62.9

Prices in Florida · Apr 09, 2026

Distance to Other Cities

How did we calculate? Place names are translated into coordinates. The Haversine formula calculates straight-line distance; driving distance uses road network data.