I rode 112 miles yesterday and began to suffer from dehydration at about the 90 mile mark. My mouth became dry and additional water didn't help.
I drank several cups of water at rest breaks. These breaks came at miles 40, 70 and 90. Between breaks, I drank 20 oz of water while riding. I had soup at the first break and fresh OJ on the second break. While riding, I ate 2 bananas, one apple a 1/2 Clif bar and a few dates.
Strangely, the water from my last water break was not absorbed. It sat in my stomach and was vomited after completing the ride.
I know now to drink more between breaks, what else should I do?