I finally figured out the cause of Goofygirls problem last year. Its mental. Experienced marathoners have been there and can relate. She pushed and pushed, the weather was warmer than normal, she knew she was close to a landmark and yet, the course threw a nasty little hill at her that was totally unexpected and GG was expecting the gateway to the park. Instead, as thanks for making past Old Sarge (Army Guy) she was welcomed to a long stretch of World Drive, AGAIN! Having an unexpected turn can be a cruel and real crusher and as GG has indicated in a few posts, a game changer.
I fall back to a paraphrased Lao-Tzu quote A journey of a thousand miles begins with a single step. As I was preparing for my very first marathon I was watching the old ESPN Running and Racing program and that quote popped up and I took it to heart. Simply, the finish line of the marathon looks too far to conquer from the start line so one really must break the race into manageable bite sized pieces. As a start, break the course into highlighted landmarks. For Disney its the Start, MK, Indy Track, DAK, WWoS, DHS and then Epcot. What I do from there is lay out each section into the landmarks that make that section a winner and run to them. I try to know the mile marks, streets, and corners in mind as I hit those sections. I also want to know from driving and previous experience, the parts of that section I want to save and bundle energy for. I think the longest distance in my bundles listed is 5 miles if one counts inside the park/landmark as its own section i.e. WWoS is a 2-3 mile loop inside the landmark. This makes the prep time and the granular race strategy very manageable.
What I suggest as a tool for those energy zapped periods that can come on all of a sudden are those tools used to stay on a run in training. Focus on the runner in front of you and tie an imaginary string to them and allow them to pull you. Run to the next character, mile post, street light, crack, run 10 strides& whatever it takes to get going again and then keep pushing that distance out as you make your short goal. GG mentioned hanging her head raise you head up, lower the shoulders and take in a few deep and cleansing breathes. These will lower the upper body stress and add a smile as you do it. You will recover the by doing these the first crash or so on course.
Grab the photographer location sheet at the expo and memorize their locations. You never what to look bad in a photo so if you know where to expect them, you can loosen up, smile and be on stride as you pass the photo zones. For the full, look for them on Main, In Tomorrowland, Coming out of Cinderella Castle, on the Indy Track, In DAK with the Tree of life in the background (I would assume Dinoland exit for that), just after the right turn past Everest, and possibly one where they catch the Dino from Dinoland in the background, In the ball park at WWoS, On the main street of DHS, possibly in front of the Thrill Ride, England/France and China as you crest the hills and along the Spaceship Earth. These locations are never guaranteed and have changed from year to year.
Hope this helps some&.
Oh, and yes, parts of the race will suck to high heavens as you run it. I tend to forget the sucking on Monday and only recall the top half of the experience.