It used to be when you sponsored someone for a walk you were pledging $X per mile or something like that. In those cases, it was both a fund raiser and a publicity opportunity, where the walk was a integral part of it.
Now it really is about drawing attention to the cause. They could do something else, and other groups do, but here the more people they get out there and the longer they can be seen, then the more attention they'll get (and in turn the more funds they will be able to raise)
Re: Why the walk?
It used to be when you sponsored someone for a walk you were pledging $X per mile or something like that. In those cases, it was both a fund raiser and a publicity opportunity, where the walk was a integral part of it.
Now it really is about drawing attention to the cause. They could do something else, and other groups do, but here the more people they get out there and the longer they can be seen, then the more attention they'll get (and in turn the more funds they will be able to raise)