Triumphs in triathlon will always hinge heavily on the final leg, but Andrea Hewitt's hopes of a podium place on her home course may be determined much earlier.
Hewitt will once again fly the Kiwi flag at the Barfoot & Thompson World Triathlon in Auckland tomorrow afternoon, with injury seeing Nicky Samuels and Kate McIlroy withdraw from the women's race earlier in the week.
And if Hewitt has any chance of emerging in front of a talented assembly of Americans, including warm favourite Gwen Jorgensen, any gains must be made in the opening two disciplines.
There will be no conserving energy for the run - very much Jorgensen's domain - and the firm focus for Hewitt will instead be on swimming at the front of the field before attempting to separate herself on the cycle leg.
"Whatever I can do on the swim and bike to be at the front of the course," she said of her aims early in the race. "I don't like racing from behind, it's harder to catch, especially on the run where there's so many fast girls. It's not only Gwen, there's lots of Americans who are doing well and stepping up.