I'm due to do my first 10k race on 20th September. I decided to try an Asics plan to give me a bit of structure. I had already managed the 10km distance but I wanted to see if I could get a bit quicker. Well it was going OK - I was a bit behind the pace on the plan but not too bad & I was doing the distances ... until today. I did 10km on Monday & 5km on Thursday. Today was supposed to be another 10km but at 7km I was worn out & definitely not enjoying it so I stopped. My pace wasn't that brilliant so it wasn't as if I had gone to fast earlier. Has anyone else gone through this? The plan calls for another 10km on Monday. Right now I don't think I could do it.