The Saturn V 1st stage could power the rocket to a height of around 42 miles and speeds of around 2.5km/sec. The 2nd stage took it to over 100 miles in height and achieved near orbital velocity. The 3rd stage was used in 2 steps: first to insert the Apollo spacecraft into an earth orbit. And then it was fired again to get it to the ‘escape velocity’ of around 11.2 km/sec, and onwards towards the moon.