Plain facts first:
10 miles in 65:49
mile splits: 6:30, 6:31, 6:32, 6:31, 6:24, 6:26, 6:32, 6:39, 6:47, 6:57
Average HR 166 - ludicrously high.
Longest tempo run so far & I have no intention of trying to run longer distances at this pace.
Mentally and physically, this was a very difficult outing.
First of all, despite trying to remain as relaxed as possible beforehand, I once again failed to keep my HR under control. It seems that knowing I'm going to be running just outside my comfort zone for a long period of time sends it shooting up by an extra 10-15 bpm before I even start, and I feel under a lot of pressure. As a result, in the first couple of miles, I felt less comfortable at the pace I was running than I should have.
Once I got 3-4 miles under my belt, started to feel more relaxed (you can see this in the splits) & got ahead of my target pace (for this run) of 6:30 per mile.
Then 2 factors began to slow me down from about 7 miles onwards. One was fatigue (obvious, but I'm sure it's kicking in earlier than it should as a result of my HR being so high), and the other that was my tubes started to get gunged up in the chill and not very clean air. Two coughing fits effected a partial clearance each time, but also seemed to knock some of the stuffing out of me on both occasions.
Running 4 laps of the same 2 and a bit mile course in the dark (plus a bit extra to make the 10 miles) didn't inspire me mentally either.
Could probably have done the last mile about 15 seconds faster if I'd chosen to bust a gut. Thoughts of having to recover in time to do my long run on Sunday morning acted as a disincentive.
Endured a most unpleasant 5 minutes upon finishing, trying to avoid choking on/throwing up an hour's worth of exercise-induced respiratory secretions....
Having this target of 84 minutes for Helsby is, at the moment, putting me under a lot of (self-induced) pressure. It is beginning to look really doubtful (unless I manage a monumental piece of tailgating on the day) whether I can manage it.
Off to bed very soon - stiff and knackered.