I'll be attending this one. Haven't decided if I'm up for > 8,000' of climbing in the 111 mile route or not. Longest I've done prior to this was a 65 mile gravel ride a couple years ago.
https://dairyroubaix.weebly.com/
What's cool about this ride is that they reserve the whole bible camp for riders, and you can either rent a whole cabin for 8 people or just rent a bunk in one. For two nights, a bunk in a "deluxe" cabin is $30; quite reasonable. Or $15 for a bunk in the cheaper cabin.
It's unsupported, so it would be nice to have a wingman. Anyone else going and be willing to have each others' back in case of emergency? I'll probably ride at around 13-14 mph average, but we don't even need to ride together to have each other's back. I'm running tubeless 45s and have a Dynaplugger and TPU spare. Might bring a butyl spare too.