Herald chief sports writer David Leggat looks at the secret of success of some of New Zealand's greatest ever athletes. Today: Arthur's Boys.

Usain Bolt arrives in Auckland today on a whirlwind promotional visit, as experts debate whether he's close to achieving the maximum in human performance.

Kevin Pilley looks on as the super-fit rise to the occasion.

A professional jockey who won the Auckland marathon in record time at her first attempt now has her eye on the Olympic Games.