Speed work on the track

I don't know why but I was again on the track doing speed work. Usually I am just having my 4 or 5 runs a week, pretty moderate and in the forest but currently I "enjoy" running fast. I met with my running fellows from the club at 5:30 pm, Udo, Silke, Michael, Frank, Martin, and Ralf joined for a speed session. We ran together for 600m in a 4min/km pace and the next 400m the pack splitted in the fast and pretty fast ones. Then we jogged for 600m. In the end we ran the 1000m between 3:25min and 4:00min and did it 8 times. 8 sounds not too much, but I can tell you ;-) and my body will tell me tomorrow ;-)

Stats:
Distance: approx. 13k
Time: about 1 hour