It almost came to a premature end because of a chronic foot injury that left Radcliffe at one point barely able to walk, let alone run.
But she has battled back to keep her dream of bowing out on the streets of London and will do so on April 26.
Radcliffe, 41, will always run, but in the future that will be socially, maybe for charity. In terms of her senior career the 26.2 miles of the London Marathon will be goodbye to one of the greatest athletes Britain has known.
She has won the London event three times, setting her world record of 2hrs 15mins 25secs, which still stands, there in 2003.
Radcliffe’s last London race was ten years ago and she has not run a marathon at all for four years.
She is not included in the elite field because she knows that she cannot compete at world level anymore, but Radcliffe will be one of the super joggers, that is for sure.
“We are absolutely thrilled that Paula has chosen London for her final marathon,” said race director Hugh Brasher.
London’s 2014 winner Edna Kiplagat and last year’s runner-up Florence Kiplagat will be at the front end contesting the winner’s spot while Radcliffe will be running towards her sunset.