Except I ran 1.4km less than you! and much slower. PS what happens to your climb? It wasn't flat.
Garmin claims 144m which I won't dispute. My out and backs to both 22 and 21 added unnecessary distance, if only I had stuck to my plan and not got annoyed at 25.
You should just aim to get them all like I do, then you don't have to worry about dropping some.