I got a small break in my otherwise fully busy day – just enough time to take a quick 8km run. The intention was to figure out what is wrong with me… specifically, why did my previous two long runs feel like the last 5km of a marathon. I decided to start quick and see how long I could hold the pace. I started out at 4:10 and drifted a little at the end, but still, I was pretty happy: 8km, 4:22/km 149 av. HR… Now let’s see how I can back that up.