Hi Marc!
Welcome to the club! I am glad to hear that you are out cycling after the THR. You are just past the 4 month mark since your THR. I started running just after 3 months. It felt weird, but each day, I saw a little improvement. You will have to listen to the hip and let it guide you through the process. It well tell you when you have done too much. Take a day or two off and try again. Stay optimistic! I felt like I was getting close to normal at 16 months. You will be running those ultras again. 👍
Hip Brother Tom