Was supposed to be 20k... .75k/20k/5k. Last year they shortened the swim by 250m (I was able to swim it in 15 minutes), this year it must have been back to the correct distance (took me 18 minutes).

I've never had problems with my computer before. I don't see how it could be 2 miles off. I know I was close to 20mph, but I was expecting to be under. I guess it's all relative to other people, to some degree, at least we were all measured with the same stick.