Thanks for flagging this up, everyone.
The issues referenced over the weekend that broke routes following 1.39 have now been found to impact Big Foot Hills, Zwift Gran Fondo 2022, Downtown Titans, and Eastern Eight. We have already proactively moved any group rides we could see on these routes.
If you’re an Event Organizer, and have races on any of these routes prior to May 19th, please change them or submit a ticket to events@zwift.com so the Events Team can change them for you. Thanks!