Any of you runners run a "hash"?
There are groups of "Hash House Harriers" all over the world- they describe themselves as "a beer drinking club with a running problem".
Apparently, they get together to run races- marked by flour on a trail...at the end of the race awaits BEER! It's much more complicated than what I described, but that seems to be what it is.
more info:
http://www.atlantahash.com/aboutus/virgin.htm
http://www.atlantahash.com/aboutus/ah4_faqs.htm
Here is a good page and links to your local HHH:
http://www.gthhh.com/