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.

Tim Anderson vomited every kilometre for the second half of his half marathon and all for a good cause.