IRONMAN 70.3 Memphis, where you'll swim, bike, and run your way through one of the most iconic cities in the South! Get ready to experience the thrill of the race and the excitement of Memphis all in one unforgettable event. The swim segment of the race takes place in the mighty Mississippi River. You'll start at Harbor Town and swim 1.2 miles downstream to the finish line at Tom Lee Park. The river can be a bit unpredictable, so be ready for a bit of a wild ride! But don't worry, there will ...