‘It destroyed our family’ – Sara Cox makes heartbreaking tribute to her brother who died suddenly

Sara Cox runs through Hamsterley, County Durham, during Day 3 of her Great Northern Marathon Challenge in aid of Children in Need.

As Sara Cox recovers from her amazing Children In Need marathon challenge, the BBC are honouring her remarkable achievement by airing a documentary covering her epic journey.

Sara Cox: Every Step of the Way for Children in Need follows Sara announcing and preparing for her challenge, all the way through to triumphantly making it to the finish line - she meets some of the incredible people helped by Children In Need projects along the way.