Callum Millward with the help of naturalist and broadcaster Sir David Attenborough has tackled the women's race at the Subaru Ironman 70.3 World Championships to give it a different audio. A few days ago the men's race in Mont Tremblant, Canada also got a new soundtrack, but Callum Millward is best known for his Cupcakes with Cal shows on our site - when he is not racing or training of course.

Jodie Swallow on the way to 2nd place in Mont Tremblant.