My 10k in Battersea Park yesterday went well although I didn't quite PB 40:54 - 3 seconds outside. Splits 04:02, 04:02, 04:01, 04:01, 04:05, 04:03, 04:12, 04:12, 04:07, 04:09.
I just didn't have the stamina to maintain my pace. Up until k7 I felt really comfortable at the pace of around 4:00/km, but at that point fatigue hit. Time to up the mileage over the winter!
(I actually thought I was running at 4:00/km over the early kilometres, but my watch very slightly over recorded the distance as 10.1 km.)
Edited: 11/11/2012 at 18:06