Step aside Usain Bolt, Otago athletes and supporters witnessed the emergence of another superstar in world athletics yesterday, when two-year-old Audrey Thorburn raced her way into the Guinness Book of World Records in a pram.

"Fantastic," her father Dougal said at the finish yesterday after pushing his daughter 10km in blustery conditions around the Hill Free course at Outram in 32min 26sec.

The effort smashed the record set by Australian Russell Stokes in 2008 of 33min 11sec.