Can’t say that I’ve noticed this in previous years maybe because I don’t do much short course, but what can I do to smooth these out for my next race?
I started my watch after about a few minutes of running, and you can see it’s climbed to my maxHR 190, even slightly above anything I’ve seen in the last few years at 195. Then it did it again three minutes or so later, and again around ten minutes. But as you can see my pace isn’t going up and the route was flat at those points.
I had something similar but not as high at the start of my (edit) Dartford olympic race in June but then I felt bad as well, and eased off: