It's the final challenge for Team Blue Peter in this Sport Relief special. Lindsey, Barney and Radzi mentor three different schools in a running event with a twist - an incredible 31-legged race! Plus, Winter Olympic gold medallist Lizzy Yarnold joins us in studio to help make some super-healthy, sporty treats, and there's a performance from former Westlife star and current King of the Jungle Kian Egan live on the show. Show less