what was the longest time that you could stay without sleeping (sorry my english is bad)

Three and a half days of airplane travel keeps you awake

About 2 days...
If I recall, it was back when I was put in a hospital.

3 or 4 days when I was away from home and losing sleep because I was sure that my bedside bookstack was crooked...
And I never found out if it was or wasn't because my cat knocked it down completely the very second I got home.
It still bugs me to this very day.

25 hours for me.

8 hours were the deadline 4 me....

well the longest would have to be when my grandpa went to hospital i stayed up for about four days i dident want to leave

Wow, um not long about 6 hours at the least...

7 a.m.

Almost an entire day.

I'm not one to stay up for very long, I need my 8 hours of sleep or I'm not going to get through the day very well...