Useful characteristics - knot can be undone for threading and for leaving on rappels, stretch makes for dynamic loading of protection and anchors*, does not weaken with repeated loading*, can be used as prussik or kleimheist*, knot can be jammed in cracks Dresden style or used to secure the runner on a flake.
W sprints - would be:
Florence Griffith-Joyner, but she was so much better than the rest I think she probably used steroids for training.
Her stride in the 200m was sooo smooth, too bad if it's too good to be true.
Paula Radcliffe - people say her marathon world record is so much faster than any other every run that it may never be broken
Mo Farah has a great kick. He might lower his 1500m time, and maybe even threaten 3:26.00 .
But in his main events 5k and 10k, he is more of a racer, using his kick.
Kenenisa Bekele holds the WRs in both events. I don't think Mo has given a serious try at getting a top time in those events, and I'm not sure how he would do. Bekele in his top form could hold a hard pace, or he could kick, so he was undefeated for quite awhile.