RAAM is a pure endurance event, and it also tends to attract mostly older athletes. Not to take away from Leah's achievement, but it's a much different animal than a high speed road race. The men's fields are consistently much faster overall and in finishing speeds than women's fields in group races. Women in the US are still allowed to race a category lower in the men's fields and even then a win is incredibly rare for a woman in a men's field - and usually only happens at the category 4 level in men's racing with an exceptional category 3 woman.

You're citing amateur races with hobbyist athletes, not professional caliber ones. It's very disingenuous of you to pick these examples when objective measurable long distance data is abundant.