The Company

The One Hundred® World Championship 2026 unites the world’s most demanding ultra events across continents and climates. From high-altitude deserts to coastal jungles, athletes compete for a place at the Grand Final in Brazil. More than a series of races, it is a global journey of endurance that pushes limits and brings the ultra running community together.

We are redefining ultra running through the One Hundred® World Championship and the wider One Hundred ecosystem, which unites the 100 km, 100 mile and 200 mile disciplines with the Trail World Tour, the global pathway for short and mid distance athletes across 10 km, 21 km, 42 km and 50 miles.

Our mission is to unite athletes and communities through resilience, adventure and human achievement. From the Seven Wonders Series to the Alliance Series and the elemental Gold Slam, every race leads toward the Grand Final in Brazil, the stage where the world champion is crowned. Together these events create a modern era of endurance sport, a world class structure shaped by global partners and created to be Built to Endure.

Experience elite level ultra endurance races across some of the world's most inspiring locations. From high deserts to coastal jungles, the One Hundred® series brings together the toughest runners and the most remarkable natural environments on the planet.