A blip and a PB

This morning was a bit strange. I was moving along quite comfortably and about 3.6k in I suddenly switched, mid-stride, from running to walking. No transition, no struggling, no feeling out of wind, just switched of between one footfall and the next. It was odd. The only way I can describe it is it was if there was a brief block/airlock in the fuel line and once it was through the system, I was fine.

I walked for about 30 seconds and then slowly got going again; building my pace back up, and had enough left to push the last 200m and knock 3 minutes off my previous time on this course, but that was still a strange blip.

I should probably just put it down to being a glitch in the matrix perhaps.

It's that or the realisation that I was at the farthest point on the course from the finish, so it was a long walk back...