In 2019, Nick Butter became the first person to run a marathon in every country on Earth. This is Nick's story of his world record-breaking adventure and the extraordinary people who joined him along the way. Telling their stories alongside his own, Nick captures the unique spirit of each place he visits and forges a new relationship with the world around him. Running the World captures Nick's journey as he sets three world records and covers over five thousand miles. As he recounts his adventures, he shares his unique perspective on our glorious planet, celebrates the diversity of human experience, and reflects on the overwhelming power of running.