A.M. Ran 2 with Julia. Then 3 with Benjamin, Jenny did 1. Then worked on leg strength with hill sprints. Finally measured the marked supposedly 100 meter stretch. It ended up being 334 feet the way I run it, so 5 feet longer. So I suppose it was measured on the very innermost curve. I had already measured the incline with an electronic level earlier - it was 6%. So I did the first one in 18.0, then 17.7. The conversion factor to the true 100 meters is about 0.3 for 18.0, actually very convenient, subtract the factor of 1:60. I was doing great on the third one but apparently overdid it as my left hamstring cramped up. I slowed down and finished the interval in 17.6. Then tried one more, but could only do 19.3. So I called it a day as far as the speed was concerned and jogged. It was painful, but I could run a bit sub-8:00. Ran enough to make the total 12 miles.
P.M. Ran 1 with Jacob, 1 with Joseph, and 3 to Computune to retrieve the van. The hamstring felt a bit better, but was still hurting.