IRONMAN 70.3 Desaru Coast is a premier half-Ironman triathlon held in Desaru Coast, Johor, featuring a 1.9 km ocean swim, 90 km rolling bike course, and a 21.1 km run around scenic coastal and resort landscapes. It’s part of a larger multisport festival that brings together elite athletes and amateur triathletes. Event Details Venue: Desaru Coast, Johor (race starts from The Westin Desaru Coast Resort) Date: 25 May 2025 Time: Transition opens: 5:30 AM – 6:30 AM Race start: ~7:05 AM Expo / Festival Details Venue: Desaru Coast Riverside (Festival Village) Date: 23–25 May 2025 Time: Fri: 2:00 PM – 9:00 PM Sat & Sun: 7:00 AM – 9:00 PM