I finished my first double century this past Saturday. Instead of having the meal provided by the event at mid point, got to each some good food similar to what I eat everyday and that gave me some good energy for the next 60 to 70 miles and a sweet ice-cream sandwich closed the deal at 20 miles to go. Temperature was on low 70 so it helped a lot. Legs were tired, but much better now and should be good to go by tomorrow.