Extended tempo at 7:17 (2 miles each at 8.1, 8.2, 8.3, 8.4). At Mint; incline 2% unless otherwise stated.
Warmup was progression, with last two miles starting at 7.0, and going up by .1 each tenth of a mile.
PTT threatened some, but never did anything. Calves are very sore. Muscular fatigue and mental strength (boredom) were the limiting factors here.