I have done 25 mile rides with no issues like cramping afterwards, etc. I will be attempting a 50+ mile ride this Saturday, if the temp is above 50F. I am 55 years old and have average fitness. Any pointers, besides carrying a tube, pump, tools, etc.? I will be taking suburban roads and am not going to carry more than 1 water bottle as I can easily refill. My 12-speed Bike has new 27" x 1.25" tires. See pic.