My first anniversary is still a month or so away, but I've found that by chewing gum I don't get as thirsty and don't even think about water until that 15th mile.

It's a different story when it's hot, then I make a conscious effort to drink every 4-5 miles whether I need to or not.

But YES, I have forgotten water several times. If it's hot, I turn back, even if I'm 5 miles away. This is the over 50 section, right?