How long are your typical gooning sessions?

I somewhat recently discovered gooning here on Reddit. Normally I masturbate at least 30 minutes but have been inspired(?) by people on here that go for a LONG time. Obviously I had to try and set records for myself to see what I could handle.

1- 2 hours felt nice. 4 hours went by surprisingly fast when I kept myself busy with various content. I've done two 6 hour sessions and I've found that it becomes a lot of work both mentally and physically. There's a good chance I won't ever go that long again. Oh I'll mention I do cum each time afterwards.

How long you usually masturbate for maximal pleasure?