IRONMAN Chattanooga is almost here! How about some fun facts before the event? More than 2,500 registered athletes ranging from 18 to 80 37 countries represented, USA leading the charge with 2,392 48 states, with Florida leading the way with 260 Source: IRONMAN The swim is set to begin at 7:20 a.m. on Sunday. Good luck to all competitors! #IMChoo #IronmanChattanooga