Normal cruise speed in flat: 33km/h (20,6MPH)
Max speed in flat: 40km/h (25MPH)
Extreme suicidal sprint máx speed in flat: 46km/h (28,75MPH)
Normal Downhill: 50km/h (31,25MPH) (is my limit comfy spin)
46/20 with 650x45B (60,5 gear inches). I love spin.