Close to 130 K/PH top speeds on the faster tracks. Concerning skill and control, speed is relative to the technical difficulty of the track (type of turns and max speed at which you can enter the turn with a perfect line), road quality, wind conditions ect. Going 100k on a straight smooth road is a little scary but riding at 100k on terrible pavement, having to late break from 100k down to 75k with 3-5 other riders in close proximity (touching / bumping and or drafting) is the difficult and really scary part. I'll have to post a skratch vid sometime this week. I just got the Cadence with Rhythm and Flow record a few weeks ago and have been thoroughly enjoying it. (First skratch record i have bought since 2007.)