Ultramarathon runners: nature or nurture? An overview of existing literature for ultramarathon runners shows that these runners are in 80% men, typically 45 years old, achieve their best mileage between 30 and 49 years in men and 30 to 54 years in women. It can be assumed that the ultramarathon runners get over the marathon on long distances, because ultra-raptures have a significantly higher number of completed marathons than marathon runners.However, marathon runners have a much faster personal best time in the marathon as a UltraLauer.
In training, UltraLauer lay significantly more kilometers than marathon runners, but at lower speed. So far little is known about what male ultra-raptor motivates and where the fastest ultra rakes in the world come from. The whole article can be found under https://pubmed.ncbi.nlm.nih.gov/23197583/