Notes
Not trusting the Avg hr as seemed low again for first 1.5k.
avg 147
Max 170
<120 7:17
121-139 0
140-158 20:51
159-176 20:11
176+ 0
Warm up on the first lap, included 1 200m "sprint".
2nd 2 laps included 1x200m "sprint" and 1x100m "Sprint" each lap.
Running loops. Not particularly flat though.
Hydration: pre run (10min) 400ml diluting juice (with sugar).