Hundred Hills 50km

Embark on a season-opening journey through an area of outstanding natural beauty at the Hundred Hills 50km® on Saturday, 14th March 2026. This meticulously organized trail ultra, starting and finishing within the ancient grounds of Stonor Park, offers a perfect blend of classic Chiltern scenery and a genuine 4000ft climbing challenge across two stunning 25km loops. Designed as an ideal introduction to ultra-distance running yet competitive enough for seasoned athletes, it provides fully-stocked aid stations, comprehensive medical support, and a professionally marked course over 80% trail. With a generous 9-hour cutoff, you can run to chase the course record or simply to savor a full day immersed in picturesque villages, beech woodlands, and rolling hills. Experience the renowned Centurion Running support in an event that balances demanding athletic pursuit with the sheer joy of a spring trail adventure. This is where your ultra year begins.