Failure to average seven-point-something mph

This morning I ran the intervals that I didn’t run yesterday, legs still a touch stiff from Sunday, but in a nice way.

I started at 7mph and increased this by 0.5mph for each 400m lap until I got to 10.5mph.  By this time my legs and particularly my ankles were causing me discomfort.  Also, I wasn’t sure whether it was a good or bad sign that my heart rate peaked at 175 and went no higher.

I dropped back to 7mph for a breather and built up again to 9.5mph.  Finally I alternated between 7 and 9.5/9/8.5 until I reached the end.

What is really frustrating is that I had hoped to come in close to last week’s personal best of 38.43… but now I’ve gone and beaten that by over a minute, passing 5km at 24.04 and reaching the 5 mile mark at 37.35… an average of a tad over 8mph.

I hate jumping over ever-higher bars… you know that there will come a point when you just won’t make it!