Boston Marathon 2011-Lessons Learned

My first Boston Marathon in 25 years and my 4th was an amazing experience. The crowds, the weather, the field, the support were orders of magnitude more spectacular than my last one back in 1986.  I had a great time and enjoyed every minute of it. This said my "performance" was an utter disaster: 4:40, 1:10 slower than my qualifying time! I struggled mightily starting after 15 or so miles. I