An interesting experiment
I raced a 10k on Saturday, finishing 60th in 54:57. I ran at high-end tempo effort (an average heart-rate of 87%). If I'd laced up the racing flats and let it all hang out (92%), I suspect I may have run around 52:30. What's interesting about this result is how much slower I race due to running less mileage. The faceless executives in a Sydney glass tower have given me this wonderful experimental opportunity.
Glen Coward told me once that a runner is only as good as her previous six weeks' training. My experiment proves this contention. I raced a track 10,000m on 11 February in 45:57. In the previous six weeks I'd run 530k, or 88k (55 miles) per week. In the six weeks prior to Saturday's 10k I'd run 327k, or 55k (34 miles) per week. Result of the experiment: I run 60% of my normal weekly volume and I race six minutes slower for 10k.