Preparing for a triathlon involves comprehensive training in three disciplines: swimming, cycling, and running. Athletes develop endurance and strength in each area while also integrating transition practice to efficiently switch between events. A balanced training regimen includes skill drills, long-distance workouts, and speed exercises for all three sports. Nutrition and hydration strategies are critical during training and competition phases to ensure optimal performance. Mental preparation is also vital, as athletes need to build resilience and develop strategies to manage fatigue and maintain focus throughout the event.