Lessons Learned in Training

Even though I have now run 33 marathons, I learn something new each cycle. Sometimes I learn something I already knew, but yet forgot along the way. And often my training confirms what I already suspected, but wasn't 100% sure about. 

Disclaimer: these lessons are unique to me and might not be applicable to the running population in general.

There's nothing magic about a 20-miler
I only ran one 20-miler this cycle and nothing longer. During winter training it makes sense for me to run multiple 20's...