The Chunkathlon will be on Sunday, September 4th (Labor Day weekend) at Free Geek.
CHUNKATHLON SEPT 4 FREE GEEK! YAY! BRING EYE PROTECTION! Registration (teams of four contestants) begins at 12:30, events start at 2:30. Contact Silken by email or web with any questions.
Also on the weekend of the Chunkathlon, we will host a Rink, which we haven't done in years. This is a low-key bike party where the little children do not need safety goggles and can ride the bikes without being rammed. Contact Silken as linked above for details.
For more recent event coverage, see Silken's blog.
If you've never been to one of these before, it's one of the best annual alt-bike culture events I know of.