LIBBY Widdup had heard the words "you have cancer" on four separate occasions.
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For more than 20 years, the popular 1980s Radio 2NC presenter fought cancer.
She battled breast cancer twice, then in 2014, she was diagnosed with ocular (uveal) melanoma - a rare form of cancer that affects the eye.
It became terminal a year later when her medical team found it had metastasised and spread to her liver.
Mrs Widdup died in 2017.
Now her daughter, Margot Widdup, plans to ride 270 kilometres from Vienna to Budapest in July to raise awareness of the disease that claimed her mother's life.
The six-day "Tour De Libsta" - Ride For Libby, also aims to raise money for the Melanoma Institute Australia.
"Our lives have been greatly impacted by a disease that we had never heard of," Ms Widdup said. "It is a scary thought that this could happen to another family, but raising awareness for early detection could ultimately help save someone's life.
"It is important for people to get their eyes checked immediately if they notice any abnormalities. It could reduce the need to have the eye removed, and the risk of the cancer spreading to other parts of the body."
Ms Widdup said the ride was something her mother had "dearly" wanted to do.
In 2010, their family had completed a five-day charity bike ride from York to Amsterdam to raise money for Jessie's Fund - a music therapy charity for children.
"Mum had enjoyed the challenge... and she wanted to do the Vienna to Budapest cycle trip along the Danube River. For me to complete this ride, with the support of great friends and family, would have certainly made her proud."
Mrs Widdup's treatment involved monthly chemotherapy at North Shore Private Hospital in Sydney.
After 19 sessions, doctors told her the malignant tumours had "outsmarted" the chemotherapy, and that it was no longer a viable treatment option.
"Mum then agreed to take part in a clinical trial of a novel treatment at Westmead," she said. "Mum had said that even if the trial didn't work for her, she hoped it brought someone else a longer prognosis or a cure."
But in January, 2017, it was found the tumours had grown. The trial was stopped, and Mrs Widdup was referred to palliative care.
"Mum had always fought. She had always done everything and anything she could to better her health," she said. "I will never forget standing outside Westmead Hospital, crying together and listening to her say that she didn't want to have to leave us and that she didn't want to go and that she had so much more life left in her.
"This is something we hope no one else will ever have to go through," Ms Widdup said.
"Mum had said she wanted people to know about ocular melanoma and raise awareness that may help others in the future. But she wasn't able to tell people during her lifetime, due to her keeping her cancer battle private.
"Mum was very grateful for the input, treatments and support the Melanoma Institute provided - however, she was always aware that it was life-prolonging, and that there was no cure. "She wanted money raised to go towards more research into this rare and unknown form of melanoma."
To support the cause, search "Ride For Libsta" at fundraise.melanoma.org.au.