I met a younger cyclist on a ride last weekend. He was exhausted and out of water. He was about 33 miles into a 38 mile ride and had another 1,000 ft of climbing to do. I gave him some water before carrying on, but while we chatted he said, "I rode across the country 17 years ago. This year, the longest ride before today was 12 miles". Kudo's to him for the effort - just not very wise. I phoned a friend who went and picked him up and drove him the last 4 miles. If only we could all still do what we could 17 years ago.