The Swim Around Key West is 12.5 miles.
The course goes clockwise around the island. See the map at right. Each number represents a mile marker.
The water is warm, usually around 85 degrees. Due to the warm temperatures hydration is very important. Equally important is sun screen. The water is generally shallow and clear. You can see the bottom for most of the race and visibility is excellent.
Currents play a role in the race and can change with little notice. Generally the water is calm with a few waves but nothing dramatic. Of course, weather can cause a change in the water. Regarding weather: It is warm in Key West in June. High temps are in the upper 80′s and lows are around 78.