Gerry, that's standard mx pace on any mx bike. It's a rather hyper activity. However, only the pro's do the big air. Us normal guys like our bones intact. I remember the thrill I used to get, about 17 or 18 years old, wind the bike up as fast as I could across a farmer's field, catch a rise and flyyyyy. Low altitude. One day there was a strong cross wind and I drifted several feet sideways before reconnecting with terra firma. I'd say 50 or 55 mph. Let's just say , don't hit a rock!!