Thanks RUN DMT for letting me know about Juneathon III (2009).

The rules:

• Run or exercise every day in June
• Blog about it (if you don’t have a blog, join the Facebook group and post your efforts there)
• Visit your fellow Juneathoner’s blogs and leave a comment in support (or call them a slacker)
• That’s it. Easy, huh?

I learned about the Juneathon rules here.