



Normal Progression?
So as a bit of context, I just set a 5k pb in the last hour.
My previous PB was 23:40, and my Coros was predicting 24.30. I got a 22.17, so about 2.20 faster than my watch predicted. As a result of this, my Threshold pace has changed from 5.07 (which it has been around for 3 months) to 4.39 after just one run. Is this normal? I feel like I should trust my threshold pace from the last three months rather than what it is now after one PB.