text: Alone, I would say I would let my son go MAYBE if he proved to be responsible, by the age of 17.  If another parent that I had met before and trusted was taking him, I would probably let him go at 13.  No, I wouldn't feel it would be necessary for me to go with him if the adult taking him was responsible enough, which if he wasn't, he wouldn't be going without me anyway, and I wouldn't need the other adult to go with us!  :-)