Thanks again to all who shared the good advice. I like the pb & honey sandwich thought, too...
Had my last long ride yesterday, 88 miles from Cruces to Hatch and back. Tailwind on the way there, headwind all the way back, and it was hot... but latest weather report for WF looks like the temps are heading way up. Ouch. Gonna start upping the fluids all week long. And ice in the sports bra is sounding more and more appealing. Anyhow, I look forward to hearing about everyone's experience. Luck to us all!