I love century threads no matter how many we have. Summer before last was my first century and it was info like this that coached me. I am 55, very athletic and type 1 diabetic. I takes snack bars, listen to my body, drink more water than needed and ride solo. I have fun but oh man it hurts at the 85mi mark.

My last training ride is usually around 85mi. I've learned not to ride the almighty century if temps go above 85 even though I do shorter rides in 95deg here in northern Michigan.