This year, Alex, Barney, Dash and Henry are taking on a really exciting challenge, along with thousands of others across the country.

We are four friends from school, in Year 8 and we hope to spend our last year at our prep school doing something worthwhile.

By swimming, cycling and running in a relay as a team and raising money for Restless Development and our school's chosen charity, together we can make a huge impact on the world.