Sorry Red Squirrel, can't go along with that. I understand the principle of what you are saying, but sometimes you have to make exceptions... Race for Life is such an important event/charity, it motivates so many women to get involved... sometimes there is a case for positive discrimination. You know what, if you want to get involved you can (as I did) run any event for Cancer research UK, they provide a very fetching pink runnning vest.