We usually stay at the GF for the half and it's so convenient. We like to be on the monorail as soon as it starts running (give or take 10 mins) and we find very little wait to get on. If I remember correctly, we pick up folks at the Contemporary and then we are off to switch trains at the TTC before heading to EPCOT. It's very smooth and organized. Once we get to EPCOT, it becomes much more crowded but at that point, you have arrived and simply need to queue your way into the corrals so it's not bad. I have never tried hopping on the monorail later so I don't know what the experience feels like. I hope you have a wonderful race!!! We are staying at the Beach Club this time around so I am trying out the bus system (hope it goes smoothly!!).