Racing the Middle Distance Triathlon in Vieux Boucau means swimming 1.9 km in a calm, sheltered marine lake, cycling 90 km through flat, fast pine forest roads, and running 21 km on a four-lap, spectator-filled lakeside course. This six-month beginner plan is designed to prepare you for those exact conditions—so you arrive at the start line confident, fit, and ready to perform. ✅ Perfect for First-Time Middle Distance Athletes – Built for those stepping up to the 1.9 km swim, 90 km bike, and ...