Well, don't know if I am the best person to chime in as I am not super into the "bike scene" but I do ride my bike a fair amount in seattle. I know there is a club around here called .83 they have thrown a couple alleycats, some sprint races, and they also have a weekly ride around seattle and a once a month midnight sprint around a lake up here called greenlake. you can check out their LJ community here:`http://www.livejournal.com/community/seattlebikes/

I have seen a few people riding brakeless around town, I personally would not do it but I am sure alot do. It's a pretty cool town, probably not as bike friendly as portland but it is still a fun place to live and there is a fair amount of trails/paths

There is a veledrome at marymoore park in remond, its about 25 miles to get there on a trail that is totally flat.... hope that helps..

other seattle people? I think harlot is here... and they guy with the raleigh? habitus?