Wondering if i can do speedruns with multiple play sessions? I love this game but I almost never play a game in 1 sitting

Unfortunately no, there are very few speedruns that allow you to take breaks during the run

Deltarune isn’t a very long game at the moment, so I’m sure you’ll be fine as long as you have a good recording setup

Late reply, only saw this now.

Recordings must be in one play session.

You can however take a short break, without it affecting your time, when swapping chapters if that works for you. There's no specific amount of time you have to do the chapter swap, it just can't be anything too long (shouldn't really be over 5 minutes).

I'm assuming though you're talking about play sessions with hours in between them, which is not something we do/allow.

I’ve only really seen breaks being allowed on really long categories in games, and even those breaks are only 15 minutes usually and runners use them for bathroom breaks, eating etc.

It should never be a really long break you’re taking