What's your longest goon sesh?

I've sat in one spot and stroked non stop (basically only stopping to re-lube or to stop from cumming) for ~25 hours, twice. First time I only stopped because I couldn't hold my shit in anymore, and second time stopped because my shoulder, elbow, and fingers all felt like they were on fire and I was afraid of going into a medical textbook beside "gooner" lol. Rented a hotel room for those sessions, recommend.