Bikeboy has some tips on what he does to stay hydrated on his rides up in Boise. I particularly like the suggestion:
A half-hour or so before I ride, I'll consciously tank up on water (20-32 ounces).
I have always been aware of drinking water while I am riding, but the idea of tanking up before the ride is a great one.
If you get thirsty, it's too late. You have to think about drinking before you get thirsty.
Thanks Bikeboy! I love your blog!