relay marathon

So I did the marathon relay with my friends this morning and jesus... i need to start running more! I got really bad stitches and couldn't run the whole thing :\ I just want to be able to run and feel free and have the fun aspect :P Not be dying because of pain in my side. I am actually going to train for next year, it was fun and I'm just assuming that I'm going to be doing it with them again.
It probably wasn't the smartest idea to stay up until 1 in the morning with everyone the night before.... :P oh well!