The record holder, Randy Gardner, stayed up 11 days without stimulants and did not die. His appearance as far as i'm aware was that he looked perfectly fine, and just suffered hallucinations, memory loss and mood swings. He could even beat a sleep researcher on the tenth day at pinball. Nonetheless, my record is 28 or 38 hours as far as i'm aware. My friend claims it's 38, but I did it quite a while ago so I can't remember the exact amount.