Last weekend was brutal. I was in Madison for the Mad City Marathon (I only ran the 5k) on Sunday. They had to close the marathon course 2.5 hours early due to the numbers of people running into trouble. The medical director basically said it was unsafe!
Granted, it wasn't that bad... we Wisconsinites are just not used to 90 degree heat in May. I had done all my running in 60 degree weather. I wasn't quite ready for it.
I did manage to get a 66 mile ride in on Saturday, so I think I am ready for the 100. This will be my first time riding that distance. Looks like perfect weather for it.
Good luck on both the long distances. The beer at the end will taste that much better!
If you obey all the rules, you miss all the fun!