i just discovered this site, and since it operates like wikipedia (or is a sub-unit of it), its worth checking into. Anyone can contribute info, and I noticed its coverage of naturist gatherings, runs and bikes is very good. Here is the link.
http://www.naked.wikia.com
I've only just begun browsing thru it, but already i found the naked pumpkin run pics i added to another thread, and these pics (censored) below from a link to the hamilton streaker club.
More awaits, and i'll add on as i find stuff -
klondike