Breaking down the gains: the swim, at 1:11, was 2 minutes faster; the bike at 6:50 was 12 minutes faster; and the run, at 4:17, was 13 minutes faster.
For some reason, the run split seems too good to be true. A large number of runners went sub-3 hours (see red circled area below), more than we'd expect, particularly after lightning fast bike times on a very tough course.
As a reference, we did the same analysis on Ironman UK's bike and run splits for 2010; substantially fewer ran sub-3. Did Ironman UK have a notably high number of run specialists this year?
