[*] Yep. Going by the results in the last Olympics, if women and men raced in the same marathon race and were cut off merely by time, there would be less gender imbalance than there is on wikipedia.
Interesting observation. However, just to be clear, in the Olympics marathon events, you can get several less than stellar entrants toward the bottom (think Jamaican Bobsled team ). In other words, the 100-or-so men in the event are not close to being the 100 best-in-the-world. But even with this diminished field, the best woman would have only finished in 64th place if competing against the men.