What is your longest session ever?

[johnnybeef]

I live in central Ohio, and there really aren't too many ongoing games that I can visit regularly. As such, 99.9% of my playing is done online. I love playing live, but have never really experienced a marathon session. As such, I would enjoy living vicariously through some of you B&M vets. Tell me a story about a marathon session, and/or, let me know about your longest session ever.