There is nothing you can do now. You’ve done all the preparing and you’ve eaten what you’re going to eat. Try to relax and take a few deep breaths before you take off. In Pilates we are always trying to control movement, but you simply can’t always control the body.
You have given it all the preparation you can and you have to trust in that. How running feels today, how dinner reacts, and whether or not you need to make a pit stop is somewhat out of your hands. Run and have fun. Good luck Hartford Half and Full Marathoners. Have a great run!