It's been several years since I've ridden on the track. Last time was at the Olympic Velodrome in Carson, California (site of the 1984 games) on the campus of California State University, Dominguez Hills. It was a 333m track with some steep 33 degree bank turns. It has since been replaced by the LA Velodrome at The ADT Event Center, the only indoor velodrome in the U.S. and host to, among other events, a round of the UCI Track Cycling Worldcup.
I wish there was a velodrome here in Austin, TX, though. I understand a few years ago there was talk of building one. The nearest one is in Houston, 250km away.
I think a nice alternative to the high costs of building a velodrome would be to build a grass track...hmmm