However the best part was after the race. I suddenly found out my arm pocket disappeared. I then quickly had a fast pace return trip to look for it. After 2.5 Km return trip, I realized I probably did not wear my arm pocket from the beginning.
Fearing the organizer would have disbanded, I had to rushed another 2.5 Km back to the baggage storage area. I found my arm pocket was kept in my bag safely.
This 5 Km rush really "killed" me^.^ Unfortunately there was no "most absent minded runner". Otherwise I would have no competitors at all^.^