For the ninth consecutive year they are running the I to I race this Saturday at around 9 am. It is a windsurfing race involving rounding channel markers at both Port Everglades and Hillsboro Inlet, finishing in South Beach Park in Ft. Lauderdale. That makes it about 18 miles plus all that tacking you may have to do.
This is an official race of the US Windsurfing Tour by the way. I understand a few kiters have joined in at times in the past.
As it is an official race there probably wouldn't be a problem for kiters tagging along as long as they didn't interfere with the windsurfers racing. In any case both kiters and windsurfers need to stay beyond 100 yards of shore along ALL beaches with lifeguards. There is no fee for the race. It looks like there may even be wind for the race from the current forecast although the direction may be a challenge for easy coastwise kiting.
More at:
http://www.ronkern.com/i-to-i_2012_NOR.htm
.