Endurance athletes require a mix of carbohydrates, proteins, and fats for optimal performance. Carbohydrates are the primary energy source during extended activities, helping maintain glycogen stores in muscles. Proteins assist in muscle repair and recovery after strenuous exercise. Healthy fats support long-term energy needs and nutrient absorption. Additionally, hydration is crucial, as even mild dehydration can impair performance. Athletes may also benefit from electrolyte replenishment during prolonged events to maintain balance and health. Proper nutrition tailored to an athlete's specific needs enhances both performance and recovery.