Amanda Chalmers was born with cystic fibrosis and will run the Brighton Marathon less than two years after undergoing a double lung transplant.
The 26-year-old University of Brighton graduate could hardly walk up the stairs before her life-saving operation in September 2012. She'll be raising money for the Cystic Fibrosis Trust.
We caught up with her while training in nearby Preston Park. You can sponsor her here.
More top news
Simon's Blog - Sunrises & Sunsets
An inquest has heard that a teenager from Oxford drowned after being carried out of his depth in the River Thames.
Thursday night's weather for the east of the region