Clare Balding continues her series exploring epic walks, by joining four women as they take their final training walk before they set off to complete the eighty-two mile Essex Way, in just three days. Rebecca Rose and her friends have been training since Christmas to walk from Epping to Harwich. They're walking in aid of a local charity close to their hearts, Essex and Herts Air Ambulance. Four years ago Rebecca's daughter Katy's fiancé was involved in an accident at work, he was treated and air lifted to a London hospital by the local air ambulance. Although he sadly died, the family remain very grateful that they attended, as they know he received the best possible care. Katy was pregnant at the time and grandson, Oscar will be there to encourage the walkers at the beginning and end of the walk.

Producer Lucy Lunt.