An update on my run/walk progress: I was doing pretty well keeping to my training plan until I hit some 9+ mile long runs, when my left hamstring started protesting. Luckily my son was home for a visit soon after that and could evaluate me. He said there didn't seem to be any injury, just overall weak hamstrings, and gave me some strengthening exercises. At the same time I also asked my personal trainer (who is a great runner and also coaches runners) to assess my running form. She gave me several form pointers, including advice to shorten my stride even more (getting at what Wahine wrote about shifting the contact point) and focus on softer landings. It is amazing what a difference just these few tweaks made! I got through my next long run without having to resort to limping the last few miles. My last long run was this morning, just shy of 12.5 miles. My goal for Disney is still to finish within the allowed time of 3.5 hrs, with a stretch goal of 3 hours. If I can maintain the same pace I did today, I'll squeak in a fraction of a second under 3 hrs. Let's hope the lower altitude and flatter terrain will help offset having to deal with the crowd of 12,399 other runners. I'm getting excited about the event!