Off Track ..... Kiwi power too much for security official

A slight security guard at the Olympic athletics stadium has learned a valuable lesson - never try to stop a powerful New Zealander who has just won a gold medal.

Valerie Vili, listed at 110kg and 1.93m knew she had won the women's shot put gold without needing her final throw late Saturday.

The ecstatic Vili began to race off to see her coach and get a New Zealand flag to celebrate - but they were on the opposite side of the track near the front row of a packed stadium.