Notes
On the Silver Comet doing an easy 18. All was going well until mile 13.3 which I crashed. Don't know what happened. I just ran out of energy.
Note, the following is from the 920xt, because I managed to wipe out my 310xt data. :-(
For miles 2 through 13: Avg pace: 1037.3, avg HR: 112.9, avg Cadence: 178, using metronome 175.
Then I crashed. Don't know why, but I came to a screeching halt and had to walk/jog it back in.
TDP was 136, 1.025 * 10:17 = 10:32, and I was in range. The last 4 miles are downhill and that is where I usually make up any pace deficit. I just didn't last long enough. I don't know whether it was the two extra miles on Friday and Saturday or nutrition. I suspect the latter.
Also, these numbers were from the 920xt which is usually slower by about 5 seconds per mile.