I don't know what a sweater triathlon is. That is just what they call knitting a sweater in the two weeks over the Olympics. A real sweater triathlon maybe would be if you knit three sweaters: one seamed, one in the round and one modular ... that would be a hell of a thing, hmmmm...
Anyway, I did it. I finished shortly before noon on Thursday, three whole days before I thought I would. The ends are woven in, the buttons are sewn on, and the sweater fits perfectly.
Pictures of the finished sweater:
Now I can go back to knitting my socks out of handspun wool and my beautiful lace scarf of red merino and silk, and spinning lovely alpaca. And wearing my newly completed sweater!