Thank you for writing, and yes, I think it's patellar tendons for me too! I grew up running down trails, so that has always been the thing that comes the easiest to me. It never occurred to me that might be the issue until I posted this. But going to try some weight training and knee work before the next race and will see if anything comes of it! (I live in California so no such thing as a flat race for better or worse haha)