Actually, without a time limit, what does it mean? Fair play that he’s going for x3; it’s a big committment, but if he does it in 35 hours, what does that mean, or 40, 50 hours? I hope he does it – but I’m not clear what “doing it means” – is it non-stop, what if he does stop, how long should he stop/sleep, can he get assistance, how much, etc. The Double, IMO, is more understandable as there is a time limit – so you do it, or not. Anyway, he probably, rightly, couldn’t give a monkeys what I think, and good on him for giving it a go. I hope this does not sound too negative, just my opinion. Run the Himiyalas in 100 days, unsupported? Madness, utter madness – but the Cranes did it, a long time ago.