I played the longest 8 hours, and it was successful, the $ 3.3 tournament I took 4th place, hard but paid off
if you count HU tournaments I played one whole 12 hours and took first place ($ 64)
that I played in a star's poker school, hard or did not have to be awake until the end it was marathon :
just got out last night from a free roll of 7500 ppl after 2 hours and 30 min got like 0.01 $ i started to smile when i realized that i wanted to watch a movie end get in the tournament because there was a commercial brake.
my record one weekend with friends.. Friday, saturday and sunday, eating and playing, take a conversation and playing, and timeouts from 15 to 30 minutes for doing another things