I raced 20" for a bit. Only i sucked on the start gate. The ladies i raced against were all nearly 10 years older than me and fast as hell. I've never seen a 35 year old chick jump so far! Most the chicks seem to be either really young or vets, not much in between so I ended up racing the former state champ. She'd just come back from having a baby and kicked my ass. So uncool...