Hi, I've just done my first ever ultramarathon - 80km. It took me nearly 13 hours in horrendous weather conditions - cold and wet. I had planned and practiced my nutrition and hydration on numerous long runs during training. On the day I ate regularly and sipped Tailwind throughout. I think I drank about 2.5 liters of Tailwind  in total plus I had some soup at one of the aid stations. However I did not pee, not even once! As we set off, I had a sensation that I wanted to pee but ignored it and then it went away. The other thing I noticed, is that my hands were swollen at the end of the race and a day later my feet also looked puffy. It is now 6 days post race and all the puffiness has gone. Anyone got any ideas of what happened or what I did wrong?

Nicole