We had a heat index of 105 the other day. You have to be prepared, well rested and well hydrated. I stay close to my house (have some good circuits in my neighborhood) and keep it short.

I went out easy and after a warm up went fairly hard for a bit but I ended it at the 28 minute mark. My body told me "you are going to run into trouble" and I immediately went home.

Doing a long hard ride in this heat at our age is asking for it. I have been training hard consistently with impeccable labwork so I have the green light. If you have any kind of condition or if you are not in top shape do not go out in the high heat.