Yeah - I was thinking, why do they need to have women only walks anyway? There really is no reason that everything they do should not just be open to the general public.
I sometimes find this in my workplace, they want to host events for special groups, when when you actually look at the event, there is no reason that it should be limited at all, it is something that everyone could enjoy and no reason to target it at any specific demographic group. It's usually just because they seem to be unable to see that "people who might like to meet up for a card party every week" is enough of a group without dividing them by sex, age, race, or sexuality.