I feel better but I'm definitely not 100%.
I had scheduled a 5K race on Saturday as a tune up race, being that my last 5K was before marathon training started (July 4th). It was a disaster. Not really, but I definitely did not run on pace. My chest was all tight, my HR was up, and I even walked part of Miles 2 and 3. My PR is 27:51 and this was was 30:42 (one of my worst).
So I knew coming into this Sunday's 20 miler that I may not be able to run 20 miles. I did not. I cut it at 15 and I walked part of Miles 14 and 15. The body is still tired from work, sickness, etc. Hopefully I'll be back on track by next week.