Planned to +1 split per 1k from 1:49 aiming for 18:30 but held 1:51 for 4th 1k and pushed at 1:49 for last 1k. HR rose to 170 by half way and stayed there. Veteran PB. r26.
1k 1:48.9 r27
2k 1:49.9 r26
3k 1:50.8 r26
4k 1:51.1 r26
5k 1:48.7 r27