After losing his virginity how long does it take the average man to learn to control his climax during intercourse?

Its not the control of climax during intercourse, its the pace of intercourse that causes ejaculation, if there is a steady variation in pace, then sexual intercourse would be longer. Variation in pace can mean not only speed, but also depth of penetration and retraction and so on. But if you're strictly concerned with timing, a steady pace should take at about 4 minutes (from what I find on the net).