total running time 53:45. after 10 minute warm-up I ran 2 min up-tempo 3 min recovery for 4 miles. then I ran up-tempo the last 0.15 miles of the run. splits 9:32, 8:33, 8:41(I stopped here to refill the water bottle), 8:44, 8:51, 9:25. I had another stop after the up-tempo segment just after 4 miles and then a brief stop for traffic at about 5.25 miles. ave HR 128
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