Because the weather is good, there are year round events and races. Unlike the rest of the USA which closes up during the Winter, there are sports and events year round. There are so many local running races during the cooler months that there may be as many as three or four races on a week end. Greater Fort Lauderdale Road Runners keeps a central listing of running races on their web site.
The swimming Hall of Fame pool complex is one block back from the beach. A world class venue where top athletes swim. There are a number of national swimming meets through out the year.
There are a good number of local Triathlons, mostly the shorter sprint distances.