15 year-old Katie Gammon from Barnstaple had a lung transplant two months ago, after a 14-month wait. Her recovery has been remarkable - at the weekend she led a 5-mile charity walk for the Cystic Fibrosis Trust.
Katie was supported on the Tarka Walk by Kirstie Tancock, who is recovering from her second lung transplant. It's the third year Katie's family have organised the event, but this was the first time Katie was able to participate. Watch Jeff Welch's full report below.