Running 1:07:30  10.5 mi (6:26 / mi) +20m 6:23 / mi
4 x 6 mins (90s)
Last time was 5, but beforehand I was thinking do 4 higher quality ones, turns out everyone was doing 4 anyway, so that was convenient.
However, felt tired beforehand, probably mentally more than physically, and the first rep at 5.27 for the mile felt like hard work.
Second one, same effort, 5.22
Third one, feeling good now but not killing it, 5.14
Last one, same, OK pushed a little at end, but didn't feel like race pace, 5.07
Spent warm down pondering why I don't religiously stick to winding the pace up when that is how I get the best of myself. I guess difficulty is hitting the sweet spot of not going too easy early on, which I managed to do tonight.