8 Mile Tempo Run

8 miles up at the lake, 2 mile warm up, 4 miles tempo run, then 2 mile cool down, though I really didn't cool down much. Was fairly warm out, 77F with a dewpoint of 64F. Could have been worse, but I was a sweaty mess by the time I was done. Ran south, then north on the inside path, across the soccor field parking lot, and up towards the sailboat cove, then back the same way to the circle, then out on the spur and back. Took a 1 minute walk break the first two miles and last 2 miles, and 1 30 second walk break between mile 2 and 3 of the 4 mile tempo run. Splits of 9:41, 9:16, 8:18, 8:29, 8:29, 8:20, 9:33 and 9:42. Overall 1:11:51 total time, average pace of 8:58, AHR of 164. 8:24 average pace for the middle 4 miles, 33:36 time, which I believe is a record 4 mile time for me. Was pretty beat when I was done, and heart rate didn't really come down much the final two miles.