I almost posted in the 50+ forum because of my age, am having a ton of dietary problems.
I ride hard with a bunch of younger more fit athletes and therefore have to bust a nut to hang on. I am riding with a personal trainer/triathlete and anther friend training and racing. Since we live in the foothills of North Georgia, we don't have a flat space of road anywhere around us. I have seen heart rates on our rides that basically tell me that at my age "You're gonna die!!!!"
I find that if I drink just water, I start to fade around 1-1 1/2 hours. If I drink Accelerade or gatorade, I start strong and then totally bonk around 1 1/2 - 2 hours. I have a 30-45 minute period of total exhaustion and then return strong. I think my body creates an insulin reaction to all that sugar. Eating Clif, Power Bars and other high carb snacks help to upset the stomach, but do nothing for power to the engine room.
I have to really work to remember to drink enough early enough, but I am getting desperate for nutrition. At this rate, I will soon have a T-bone hanging out of the back of my jersey.
Any help would be appreciated.