I think that just depends on the person being mentally prepared and well rested. Anything has its basic health concerns once you're awake for longer than normal. Like I'm mainly wondering how or if it can get submitted? Since their goal is to set the record for it, which if no one has set it yet, then they'd be doing so.
Yeah it is a longer speedrun, but people also speedrun longer games that do typically take that long. For them I believe its a challenge. Just because it wouldn't be everyone's ideal speedrun doesn't mean he shouldn't be able to set a record for it ya know :). I think his goal is about 20 hours atm, he did one before around 26 hours I think. Also 16 hours? That's pretty damn good, the shortest time that I've heard/know of now
So the question is how does that get submitted? I don't know if they looked into but they're doing it live and it'll have a vod I think. but I think going from Ash to Iri 1 should definitely have a speedrun category. Any help would be cool thanks :).