Synopsis
Caillou wants to run a marathon, just like Daddy. His father explains that marathons are for grown-ups, but Caillou insists he can do it! Caillou and Daddy go running together, and Caillou discovers its harder than it looks. When he sees Rosie dawdling along, Caillou realizes that everyone runs at their own speed and ability and he decides to run a mini-marathon instead!