What are the main physiological factors driving the performance during a marathon race? 2. How an ideal marathoner will look like? 3. What would be the ideal event (city, temperature, altitude) to officially break the 2-hour marathon? 4. How does age affect the performance (and record time) of the marathon? Is there an ideal age for the 2-hour marathoner? 5. How do participation rates can influence the performance in marathon events? 6. How technology can affect the performance of a marathoner? 7. Did women already achieve the equivalent of the men's 2-hour marathon? Justify your