Groin pain, surprisingly, is a classic symptom of hips that need replacement. You need a thorough evaluation by a doctor of PT, but I suspect you need at least one new hip. If it's any consolation, my friends who had had both find the hip recovery easier. The fact that you have stayed in shape will make recovery easier.
What does the ortho recommend?
Sue

@mabfp3 Sorry to say , but groin pain is usually indicative of hip problems. I was a jogger, but had not been running for a few months due to a dislocated shoulder. When i went back to running, after a few weeks, i noticed after the run i had groin pain. At first i thought it was because I was increasing my mileage too quickly. When it continued to get worse, i finally saw my PCP who diagnosed osteoarthritis. I then saw an orthopedist who took his own Xrays and told me my right hip was bone on bone. I was an immediate candidate for surgery. I was not ready for surgery then. I went to PT, had to go to walking instead of running. Almost a year later when the osteoarthritis was starting to more severely affect other aspects of my life, i decided to have the surgery. The surgery was definitely worth doing.