5.1 miles in 35:42.
I ran 3 x 1/2 mile hard during the run with 1/2 mile recovery between each one. I used my watch to measure the distance for each repeat, which meant that each repeat was actually longer than 1/2 mile (the watch did an exceptionally poor job of measuring distance today measuring 4.90 miles for the run which then showed up as 4.8 miles in the online service). Based on the actual distance I ran during my loop around the lake, I estimate that the repeats were actually about 0.52 miles.
I started out a little easier on the first repeat to try and work into the repeats slowly, total time 2:54 (recovery 3:58). The second repeat felt like I was running into more of a headwind than the first (less tree cover), while I increased the effort a little, total time 2:51 (recovery 4:03). I pushed myself a lot harder on the final repeat, which had similar wind to the second. My legs felt dead near the end of this repeat, total time 2:43.
I think this workout highlighted my current lack of true fitness (the fatigue during the third repeat was excessive considering the moderate effort on the first two repeats), but I was happy with how things went, and my legs recovered quickly after the final repeat was finished. Based on my estimations for distance I would subtract about 7 seconds from each repeat to actually get a half mile time, so 2:47, 2:44, and 2:36.
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