This episode of Tracks and Trails features the Royal Canal which is fondly known as the green and silver line and is presented by Dublin native Annalise Murphy who captured the hearts of Irish audiences during the 2016 Rio Olympics when she realised her dream in the Women's Laser Radial sailing competition by winning a silver medal for Ireland. Annalise will be accompanied on the walk by her mother, Cathy McAleavey who herself was an Olympian competing in the Seoul Olympics in 1988.