You don't often hear an Aussie-Canuck raving about European ultratrails. You should check out Nicki Rehn presenting Tor des Géants at FEAT Canada. Don't worry, the video below is short and funny - not at all like those grueling ultra races.
TDG is a 330 km single-stage trail run in September. You can eat, sleep or whatever, but the clock keeps ticking all the time. You just somehow have to run the 200+ miles with 24000 meters of climbing in 150 hours.
And naturally you are always welcomed to Hotel DNF.