Just finished the Chain of Lakes Cat 4 road race. we were combined with the 5s and had close to 90 racers. there were no fewer than 4 crashes and One insane arguement between a cat 4 and cat 5 racer about the cat 5s ike handling skills or lack there of. Cat 5 had enough and punched him in the shoulder then peloton yellowed at both of them then everyone was happy.