TKD/CKD Group?

Since there's no useful means for searching for specific groups, can anyone point me towards some TKD/CKD groups already in existence? Specifically, I'm interested in figuring out how one/both of these methods might be useful for weight loss while training and competing in relatively intense and/or endurance cycling and running events (duathlons, cyclocross, running races in the 5k - half-marathon range). I can read lots of general things on the 'net, but it's always nice to be able to bounce ideas and experiences off of other people doing the same thing.

TIA!