I went 18 miles today

Yes, I really went 18 miles.  I rocked the first 11 of them.  Then did pretty well for the next 3, then my legs just wouldn't move any faster than they were moving.  I felt GREAT.  Not winded, not tired, the bottom of my feet were sore and I had an new rubbed sore spot that will get body glide next time, but I just couldn't my legs to not plod along.  I took more walk time and am pretty sure I walked faster than I ran.  I don't know what it was, other than perhaps just the length of time I was out there.  Something about 4 hours being plenty long enough :).  For the first time though, I had the mantra going in my head.  Guess I need to find a better one, but this one DID get me through a couple of miles   Wondering if I EVER want to do full again.  Probably not, but I WILL finish this one and WILL keep running, because I do enjoy it.