Question: what is a 5i50 ironman?
Answer: The series will be called the 5150 Triathlon Series. The name comes from the total distance of the race equaling 51 kilometers (1.5km swim, 40km bike and 10km run). ... It is unclear at this point if the race will accompany the Ironman 70.3 World Championship, or if the 70.3 race will be moved to a different location.