Actually it was Sunday night and Monday morning. A friend and I did a 50 mile treadmill run at a local gym. Great experience! Learned a lot about nutrition on an ultra, maintaining good running form as the miles pile up, and mental toughness, i.e. my blistered toes screaming to my brain to stop the insanity and brain replying: "Not now. Dealing with queasy stomach." Good, Brain! My time was 11:53. Not good enough for a Wheaties box pic but at 56 I'm ok with that.
Yeah, I definitely had to have a plan for my mental health. Started out with a "time pyramid" of 25,5,20,5,15,5, etc. down, then back up to 25 with the running at 6mph and the walking at 3mph. For a short while I bumped it up to 6.2 and 3.1 but then felt like I needed to back off some because of an achilles problem. After that I would listen to my body and fluctuate running between 4.5 and 5.5. When necessary I'd hop off for a bathroom break or some fuel from our "aid station". Worked well.