Did most of the ZUL (C) underground race last night. This is one where you switch the clock back on your computer so that you are with a small group on the other course that is not being used. There were 8 of us in my group. Pace was a solid 3.0-3.5 with lots of surges. We did the Watopia figure 8 which means a long and steady climb. I came close to popping but never went off the back. VO2 is very hard for me now in my untrained state. It was interesting to watch the others. There were some really good drafters in my group, put me to shame. This is something I want to work on. I think the trick is to try and maintain steady power. I was all over the place. Anyway this is a very late event for me on a work night so I sprinted after two laps and sat up.