Strange speed workout, I wanted to do a fast 6k tempo run at an aggressive HM pace (approx 4:10/k). I started really comfortable at 4:06(hill), 4:06, 4:03(hill) for the first 3k, at that point I was confident I was able to push even more and finish the last 3k at 3:59, 4:08(hill), 3:55(half-hill). The average pace was just above 4:03 that would be right now a 10k pace but except for the last one when I was "racing" all out, I was well below the pain treshold of a 10k pace. I can't say either that was a HM pace and I tend to believe that right now that was a fast HM pace, but sustainable only for a 15k. To add some confidence to my selfesteem this training (as the rest of my winter evening runs) was done on 1700m loop with a hill and a downhill and a 180 degrees turn where I was forced to stop turn around and restart. I am planning to extend this kind of run up to 10k in the next months and see if I can transform this pace/run in a HM training. | 