20 Miles In The Heat

Judy was planning an 18 mile run, so I figured I'd do 20. Dropped her off at the restaurant at 6:30, I drove up to the soccer field parking lot, walked a bit, then got running at 7am. I was going to run 10, then meet Bob at 9am and run my final 10 with him. First 10 went pretty good, it was already 73F out with a 68F dewpoint at 7am, so I knew I'd need to take it pretty easy. First 10 were in about 1h45min, average pace of 10:30, AHR for the miles were in the 140s and 150s, with the 10th mile being the highest at 157. Splits of 10:42, 10:27, 10:45, 10:24, 10:25, 10:24, 10:27, 10:23, 10:23 and 10:29. Went to the bathroom, got some water, had a gu, toweled off a bit, then Bob and I got going right at 9am and it was up to 77F with a 70F dewpoint by then. First few miles were all right, though the Garmin started acting up a bit and turning off, probably due to all the sweat. Ran the last 10 miles in about 1:52:35, about 11:15 pace. Heart rate kept creeping up, with an average heart rate for mile 17 of 169. After that I started taking more walk breaks as I didn't want my heart rate to be that high. Splits for the final 10 were around 10:16, 10:24, 10:16, 10ish, 10:28, not sure, not sure, 12:00, 12:43 and 12:37. I was getting really warm by the end and it was hard to run without feeling very hot. Legs were surprisingly not too dead. At the finish, itw as 85F with a 71F dewpoint, so getting really brutal out, but at least there was a bit of a breeze. Happy to have it done.