The 26-year-old from Sherwood in Queensland was on a training ride north of Milan on Wednesday morning Italian time when she was struck by a car.
Emergency services flew to the scene by helicopter but were unable to save her and she died at the scene, according to the Amaury Sports Organization.
“Everyone in the cycling community is feeling the loss and our thoughts and sympathy are with her family and her fiance,” said Cycling Australia CEO Graham Fredericks. “Carly was following her cycling dream in Italy, doing what she loved to do and enjoying life. Sadly that dream has ended.”
Hibberd’s Facebook page showed no indication that the cyclist had passed.