Hills 1:00:00 [3] 6.52 mi (9:12 / mi)
TM- random hill fartleks. 10 min cooldown and warmup. 40 minutes of pretty random hill fartlek work. I toggled speed from 730 to 11, and moved the hills from 2% to 15%. All kind of random lengths of intervals. Pretty much just made it up. I did wear a HR monitor and the last 20 minutes I was getting up into the 150s.