[AmericanChopper]

The fact that the parent comment was talking about “these distances” aside, men still outperform women in that level of ultra-endurance. The problem you have though is getting any meaningful samples. Each course is different, those races have very few entrants, and far fewer female entrants. Some of those races have been won by women, and there are even some particularly obscure world records held by women, but nothing you could reasonably point to as a trend.