The session was 2 x 2 miles of half marathon pace running thrown into a longish 10 mile run. After a 4.4km warm-up I was going to use a section of path that out and back would be just over 2 miles. Generally flat, but there is one nasty little climb.
True to form, I ran the whole course each effort which was about 3.6km so about 400m longer than schedule. My times for each effort were 12:06 and 12:13 so around low 3:20/km pace but the problem was it felt more like 10km pace. Perhaps the higher humidity was a factor. I ran 1.9km easy between those 2 efforts and finished with the same 4.4km warm-down. All up 17.9kms for the day.