Guess "Sleep when I'm Dead" is the only choice for me since there's no 48+ hours option.
It happened back in high school, me and some friends had a weekend-long LAN party (for lack of a better term) when really it was a Final Fantasty Tactics (original PS) competition. The objective: who can beat FFT first, completing every possible side mission (i.e. getting Cloud, Beowulf, doing the Deep Dungeon, etc). Everyone tossed in $10, winner got to keep it all, and about 54 hours later, I found myself about $70 richer. :3
One person was literally a battle ahead of me, I was on the first part of the final battle and he was on the 2nd. But he ended up dying and had to start the fight over, by that time I had already started it and ended up beating him by about 5 minutes or so.