Simon Richardson and James Lowsley-Williams head to the Himalayas on a quest to discover Nepal’s mysterious ‘Forbidden Kingdom’, the remote mountaintop city of Lo Manthang. Breath-taking views, lung-busting climbs, and incredible encounters with locals; Si and James are in for an unmissable gravel bike adventure! Their once-in-a-lifetime expedition begins in the chaotic streets of Kathmandu before embarking on a gruelling five-day ride up the ancient trade route that forges a path between Nepal and Tibet. Their epic ride sees them dicing with kamikaze trucks, enduring freezing rainstorms, taking a 228m bungee jump, and even a heroic attempt to beat a Himalayan KOM.

• Documentary