57 year-old Derek Smiley of Barton Mills thought he had hung up his running shoes for good.
But after an old school friend, Janice Wright, was diagnosed with breast cancer he decided to get back in training for one last time to raise money for Breast Cancer Care.
Derek completed the Brighton marathon on April 14 in six hours and 57 minutes.
Derek said: “I hope to raise more than £2,000 and am now doing some other events.
“That was my last marathon though... I think.”