The longest time completely without sleep at all was a little under 5 full days. But I was not doing a whole lot of activity during the nights - just reading about 4 fanfics at once on the computer all night long, so my body was getting a kind of rest, laying on the couch. Felt restless though.

My 'usual' hypomania complete non sleep time is 3 days. I can easily do that and function before I need some sleep. Usually I will have 4-6 hours then go another couple days without sleep continuing on that kind of sleep cycle until the crash or mixed episode.