Notes
I was not intending to do that. That was excessively stupid. All because I am way too competitive. I passed someone around 9:00 in moving fairly significantly faster - he decided to come with. I decided to see how strong he was rather than just turn around. After about 6 minutes of constantly accelerating pace, he was still there. At this point I decided to throw in a surge just to see what happened.
What happened is that the guy promptly disappeared and I finished the second half of the run at about 6:15 pace... The turnaround was at 20:00, and even considering the half kilometer detour, shaving 5 minutes is still too much (considering the detour, it was between 2.5 and 3).