I have one more month to get ready

Yesterday I did my 100 miler and followed with a run. The run was unsucccessful. My heart rate spiked up, I went anarobic, my ears would clog up. I am blaming it on dehydration. I was gulping water down on the end of the ride. I will focus on being properly hydrated the day before and drinking and drinking.

The plan for next week: Do my long run in the afternoon (Friday).
Sat: Long ride - but make sure I am hydrated.