50k Your Way The Challenge This January, get out and get fit and challenge yourself to walk or run 100k the way you want. You can choose at 5k for 20 days of spread the 100km over 30 days. Invite your friends to join in, make your daily 5k a social outing and take some much needed time away from your screens and desk. How it Works: Join the challenge by setting up a fundraising page on our website or on facebook. Once you have signed up we will send you a One in Four T-shirt Track your progress, keep your friends and family updated and ask them if they could offer a few euro to support you and One in Four. Once you have completed your 100k, we will send you a medal to show our appreciate because you truly are our superstar. Booking for this event has now closed.