Originally Posted by Jughed

1 bottle per hour in the summer - max? Not for me.

I sweat out buckets...

I drink at will, whenever I feel thirsty - typically the water is going out faster than it goes in.

I carry two of the biggest water bottles I can fit on my bike - 32oz, on long rides one will be 50/50 water and sports drink mix. The large water bottle is good for an hour max, and the 50/50 mix 2 hours max.

So in the heat of the summer I'm drinking 45-55oz per hour min. I lose water weight and don't have to pee much, and my pee is darker at the end of the ride.