Jacksonville is about to make history. On Saturday, May 16, 2026, the city will host its first-ever Ironman triathlon, joining Panama City Beach and Haines City as Florida's three official Ironman destinations for the year. Thousands of athletes and spectators are expected to flood the Sunshine State for this grueling debut.

For the uninitiated, an Ironman is no ordinary race. It's a single-day endurance event that pushes the human body to its limits: a 2.4-mile swim, followed by a 112-mile bike ride, and capped off with a full 26.2-mile marathon run—all completed consecutively. Athletes have up to 17 hours to cross the finish line. The half-distance version, the Ironman 70.3, cuts those numbers in half: a 1.2-mile swim, 56-mile bike, and 13.1-mile run, with an 8-hour, 30-minute cutoff.

The sport's roots trace back to 1978, when Judy and John Collins organized the first Ironman in Hawaii with just 15 brave competitors. Today, Ironman and its 70.3 series span over 50 countries, making it the world's premier triathlon series. Jacksonville's addition marks an exciting expansion into North Florida, offering a fresh challenge for triathletes seeking new waters to conquer.

Here's a look at Florida's 2026 Ironman lineup:

IRONMAN Jacksonville – Saturday, May 16, 2026 (debut race)
IRONMAN Florida (Panama City Beach) – Saturday, November 7, 2026
IRONMAN 70.3 Florida (Haines City) – Sunday, December 13, 2026

Jacksonville's course promises a scenic yet punishing route. It kicks off at 7:30 a.m. with a 2.4-mile swim in the St. Johns River, starting from Metropolitan Park. From there, athletes will mount their bikes for a 112-mile ride before transitioning into a 26.2-mile run through downtown Jacksonville and Riverside. The city will buzz with energy as competitors push through the streets for up to 17 hours—a true test of grit and determination.

Whether you're a seasoned triathlete or a first-timer dreaming of crossing that finish line, Florida's 2026 races offer something for every endurance enthusiast. Ready to take on the challenge? Check the official Ironman race locator to find an event near you and start training for the ultimate test of human endurance.