5 Mile Run with Record Mile

5 miles up at the lake, a warm up mile, then a 1 mile record attempt, then 3 miles cool down. Splits of 9:52, 7:11, 10:00, 9:55 and 9:59. The 7:11 was into a bit of a headwind, and I needed to take a 90 second walk break afterwards, and I was starting to fade at the end, but it felt pretty good. Heart rate got up to 178 during the mile. 46:59 total time, avg pace of 9:23, AHR of 158.