For the IAU records on Wikipedia, yeah. A couple things to keep in mind, 80% of the people who complete an ultra marathon are male. And the gap between the sexes, some estimate around 4% for ultra marathons, seems to be trending down.

https://www.researchgate.net/profile/Nicholas-Tiller/publication/348547781_Do_Sex_Differences_in_Physiology_Confer_a_Female_Advantage_in_Ultra-Endurance_Sport/links/6002ea5c92851c13fe1514f7/Do-Sex-Differences-in-Physiology-Confer-a-Female-Advantage-in-Ultra-Endurance-Sport.pdf

Here’s better research I found. You’re right, men still win more often and have the records. But honestly it’s more complicated than just who is faster.