OFFICIAL Port Adelaide ambassador Anna Meares has claimed two medals at the UCI Track Cycling World Championships.

The Olympic gold medallist paired with Kaarle McCulloch to beat Germany in the bronze medal race in the team sprint on Thursday.

She then won silver in womens' 500m time trial.

It was her 25th medal in world championship cycling.

The Queensland-born, Adelaide-residing star remains just one rainbow jersey - or world title - short from being the most successful female track rider in history.

Meares has been an official ambassador of Port Adelaide and works particularly closely with the club's youth and female community programs.