Hello I am new here. I’ve booked my coastal Camino to start in Porto on October 17th. I appreciate all the contributions so far about Covid testing requirements for US citizens. I hope to contribute once I start my journey. The only thing I can offer now is that I learned that American Delta and United have partnered with a company that offers rapid tests to carry on your trip if needed. You’ll need a smartphone of course and WiFi but it may eliminate the need to find a lab before returning to the USA.