Third Annual Destin 50 Beach Ultra
Registration opens July 4 for the 2013 Destin 50 Beach Ultra, 5k Son of the Beach and Beach Athletic Challenge.
Organizers say the Destin 50 is the world's largest beach run.
The 5k and Athletic Challenge will be held Feb. 16, and the Destin 50 on Feb. 17.
Approximately 120 entered the ultramarathon last year; and the 5k was also popular, aloing with the athletic challenge.