London Marathon dress code: Gender rules

It’s reasonable to assume that the meetings of the people who set the Guinness World Records (GWR) rules and arbitrate on disputes must be enthralling, and probably as long as it takes to run a marathon.
Some of them might be as compelling as listening to medieval theologians arguing about the number of angels that can dance on a pinhead, with conclusions varying according to the sizes of the angels and pinheads and the nature of the dance.