Yikes! I forgot to say how long. 62 hours, I would not recomend it. You actually reach a point where you are so sick because of it that you cannot get to sleep. God bless, picklesI was young at the time, about 17 yrs. I was working a fundraiser for childrens charities. It was alot of fun but when done and we all were going home I was seeing dancing animals on the highway. I stopped after that and let another drive. Yikes never did that again. Smiles and God bless, pickles