Lunch break provided perfect weather conditions (at least perfect for mid January): It was NOT raining. So, my plan said "Do some intervalls", okay, can do BUT in fact after running the first meters I couldn't think about doing a hard intervalls workout. I really had pretty heavy legs, especially my calves. Anyway, don't stop and run! After the first twenty minutes I had some flat meters before me, so I started with my first intervall: Goal was 10 times 2 minutes fast with 1 minutes recovery (slow running) in between. The good thing with intervalls is that, once you have started, distances passes pretty fast and you don't think too much about running, stopping, pain or so. You just listen to your watch when the fast pices is over and you can relax and then, it starts again ;-)
At the end I was pretty tired, the intervalls were completed after around 11k and I still had 4k to run back to the office, puh.
Stats:
Distance: 15k (9.3mi)
Time: 1:13:30
Pace (Avg.): 4:54/km (7:53/mi)