I'm sorry, but that isn't far off. I have a few typical loops. I know my PRs for those loops. Wind obviously makes the biggest difference in my times. I know if the wind is out of the SE and if I do loop A, I stand a good chance of beating my PR for loop A. But it also depends on how I feel. Obviously if I am hungover (not any more, I'm too old for that nonsense), I'm not riding as fast. I have also learned with age that there is really only one thing more satisfying than a good bm. But since this is a PG forum, I keep my yap shut.