It depends on the bow. Some bows are made longer for longer draws, some can be modified to handle a longer draw. I know of a 56" recurve that will handle a 30" draw, where in another style a 60" has to be modified to handle it. Some longbows would require a 68-70" bow, where in a different design a 64" or shorter will work. This is one area where getting a custom bow, made for your draw, is a bonus.

Chad