Well, after admitting I was wrong I went and looked at really long-distance (100 miles or so) and while the list isn’t exclusively female, there are a lot of women’s names listed. The problem is that on these really long swims, there is usually just the one swimmer making the attempt.
To back up a bit. There are jobs in the US Military that women DO out perform men. A friend of mine was a Marine Air Traffic Controller. He said that there was a woman on their team that was just amazing. She was the best he had ever seen. Handling flight paths of incoming/outgoing along with crippled planes that needed special coordination.
Anyway, through her concentration and calm under pressure she, kept her men safe in the air.