The OP article said the same thing, and like this article, it provides no evidence for the statement. I looked for some numbers, and for world bests, men had better performance in every category I found. The study linked below looked at speeds over decades and in every case men had better performance. Both men and women have improved over time, and as a percentage the difference is getting smaller, but in absolute difference it appears the same. It is an admittedly brief search, but I can’t find evidence in the form of measured times (not conjecture about estrogen) indicating at all that women perform better in ultra marathons. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3870311
Those are athletes. To really know, you would need to use average people going for the same time/distance at more moderate speeds. While the fastest men are probably faster than the fastest women across most any distance, I doubt we have good data on average men and women going the same distances.
The OP article said the same thing, and like this article, it provides no evidence for the statement. I looked for some numbers, and for world bests, men had better performance in every category I found. The study linked below looked at speeds over decades and in every case men had better performance. Both men and women have improved over time, and as a percentage the difference is getting smaller, but in absolute difference it appears the same. It is an admittedly brief search, but I can’t find evidence in the form of measured times (not conjecture about estrogen) indicating at all that women perform better in ultra marathons. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3870311
Those are athletes. To really know, you would need to use average people going for the same time/distance at more moderate speeds. While the fastest men are probably faster than the fastest women across most any distance, I doubt we have good data on average men and women going the same distances.