Danny Mills makes no secret of his reasons for his marathon exertions - first and foremost, it's about vanity.
The 45-year-old is an experienced ex-footballer, playing in a Champions League semi-final for Leeds and a World Cup quarter-final for England, and his sons are also carrying the family name forward. George is an accomplished middle-distance athlete, the British champion over 1500 metres, while younger sibling Stanley made his senior debut for Everton under Frank Lampard.
Their father is not slowing down, though, even if his days as a right-back are behind him. He will be running the TCS London Marathon this year, raising funds for Cancer Research, Bowel Cancer and the Bobby Moore Fund, and his commitment to the cause helps him lead by example.