North Chilterns 50K

Discover the captivating ridgeline trails of the North Chilterns at the North Chilterns 50K on Saturday, November 21, 2026, a beautifully crafted ultra that offers stunning, far-reaching views and classic undulating terrain. Starting and finishing from the elegant Putteridge Bury Estate, this fully-marked 50km route is a delightful mix of flowing trails, punctuated by iconic climbs like Warden Hill and the scenic Barton & Pegsdon Hills, ensuring the running remains varied and engaging throughout. As a UTMB World Series Index Race, it attracts a field of dedicated trail runners while maintaining a friendly, community-focused atmosphere with exceptional organization and support from Runaway Racing. With three well-stocked aid stations featuring Precision Fuel & Hydration products, an 8-hour 45-minute time limit, and a maximum of 250 runners, the event balances a serious ultra challenge with a manageable, welcoming scale. The crisp autumn conditions add an extra layer of adventure to the soft trails, making it the perfect season-ending goal or a benchmark event for runners building their ultra-distance experience. Secure your entry for a late-November day where every climb is rewarded with a breathtaking vista, and the finish line marks a significant achievement on these timeless English trails.