10kr26 and some race starts

10kr26 a little struggle to keep the HR down with the stroke rate to be honest - did contemplate dropping it to r24 but decided to just stick with it. Then a 500m race start and that felt terrible - the 300m race start felt a lot better thank god.
10k was 1:49.0

500m 100m splits where

1:28.5 r37
1:31.0 r33
1:31.0 r36
1:31.0 r33
1:31.0 r33

300m 100m splits where

1:27.5 r38
1:29.5 r33
1:30.0 r33