u/Hot-Kaleidoscope1486

I played undertale a couple times when I was younger doing pacifists and normal playtrhoughs but this time I’m probably gonna play it with friends at a sleepover. How long is a normal pacifist run? Is it possible to beat it in a single sleepover? I’d say I’m pretty good at undertale it only took more than one attempt for The Two Dog Grim Reapers and Flowey and Asriel last time I played it which was like 8 months ago.