If it is a course you race often during the season go on a none race day and work on your turning/cornering at high speeds. That way you know how to handle you bike well before trying it in a group. A race I was at recently I was consistantly going between 28 and 32 mph through the s curves. Of course this to me was more fun then the race itself so I purposely didn't ride with a pack so I could hang crazy speeds around them. Hit 35.9mph around one. Just be careful if you decide to pedal around a curve so you don't strike a pedal, that can bring you down quick, and at high speeds send you to a hospital. However, it is possible to pedal through a curve just practice by yourself before trying it in a race.