The term that describes a significant skill in endurance sports is stamina. Stamina refers to an athlete’s ability to sustain prolonged physical activity without fatigue. It is crucial for athletes in sports like marathon running, cycling, and swimming, where performance relies on both aerobic and anaerobic endurance. Developing stamina involves training the cardiovascular system, increasing muscular endurance, and enhancing mental resilience. Athletes with high stamina can perform better over extended periods, making it a key component for success in endurance competitions where consistency and energy management are vital.