A summary of the New Zealanders in action and their race times on the fourth day of Olympic Track Cycling racing at London's Velodrome, starting at 9pm Sunday night.

Cycling Southland's Natasha Hansen made her Olympic debut this morning in London, lining up in the Women's Keirin.

A summary of the New Zealanders in action and their race times on the third day of Olympic Track Cycling racing at London's Velodrome, starting at 9pm Saturday night.