Update:
I'm planning to ride "The Great Eclipse Century" 173k perm. This is a newly-approved perm version of the Eclipse route we did last year. Starts in Cleburne at the Nolan River Mall. I'm figuring 8:00 AM start time. You're welcome to join me. Register for Perm No. 5469 on the RUSA website. Route is this:
https://ridewithgps.com/routes/50111644There is at least one 200k and one 100k also being planned; if you are interested in them, let me know and I'll put you in touch with those parties.
Forecast shows 62 degrees at ride start, warming up to 82. Winds at 9 mph from south at the ride start (headwind), picking up to 17 mph from the south (tailwind) at 3:00 PM. Partly cloudy in the morning, mainly sunny from mid-afternoon on.