The Tour de France is one of the biggest sporting events in the world, drawing record numbers of spectators and billions of viewers across the globe. Attracting only the best cyclists in the world, it is considered the pinnacle of success for any professional to compete in the tour. Covering a hugely varied and diverse terrain and lasting three weeks, it is one of the most grueling and physically demanding challenges in the sporting world.

While many people don’t know how it works, the event that has been running for more than 114 years, is fascinating to watch once you understand the basics.

We’ve created a guide to all things ‘La Grande Boucle’. Take a look: