There are millions of these. Everyone's seen the flyers in the bike shops and the occasional message that finds its way into your inbox asking you to "Help fight Disease X by riding 100 miles!". Ok. I get it. But I don't. If you want to support a cause, then write a check to whatever charity associates itself with it. Why complicate things by pinning numbers? Why dilute the support for the cause by adding the expenses associated with permits and staff and port-a-johns and and and. It just isn't efficient.