Exercise? Geronimo? Not a chance! So when he accidentally gets signed up to the Mouse Island Marathon, Geronimo can't pull out fast enough. Unfortunately his family has other ideas, and they soon have a whole fitness plan set out for him. Will Geronimo make it across the finish line on the day?

About the Geronimo Stilton series:
Geronimo Stilton is a bestselling children's series with a dedicated international fan base. As seen on Netflix, the series follows the adventures of the Geronimo Stilton the fa-mouse journalist, as he searches for the next hot scoop. With illustrations and fun fonts throughout, Geronimo Stilton is perfect for reluctant readers aged 5+ years.