Rainy, nasty day today. Unfortunately, I needed to do a longer workout today, weather good or bad. I ran the first 7 miles with Dave, averaging around 7:10/mile. It rained pretty hard on us, and my shirt was soaked, plus I lost feeling in my hands. I dropped Dave off at home, changed my shirt and shoes, and put some gloves on, and then ran over to the gym. I ran 6:20/mile pace on the way to the gym. The rain let up a little bit too, which helped. At the gym I jumped on the treadmill for 40 minutes, and started at 6:30/mile pace, and bumped up the pace every 5 to 10 minutes -- 6:15, 6:00, 5:52, 5:45, 5:39. So it was a nice progression up to marathon pace. At 5:39 pace my HR was steady at 168. Ave HR for the run was 150. Ave pace for the entire run was 6:45/mile. I wore the Polar foot pod while on the treadmill. Its pace measurement was dead on up to 6:00/mile pace. Then as I ran faster and faster, and the pod drifted, displaying slower speeds. I found this same trend while doing track intervals last week; the pod was accurate at normal pace, but not at CV interval pace (5:10-5:15/mile). This is because (I suspect) that the my stride is different enough at higher speeds to invalidate the calibration, which was performed at lower speeds. For this one reason (in my mind), GPS is superior to foot pods: it works at any speed and any stride.
(Cascadia: 41 miles) (Adrenaline black: 387 miles)
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