Chiltern Challenge
Princes Risborough, United Kingdom • 19 Jul 2025
The Humanity Direct Chiltern Challenge is a one-day endurance running event set in the picturesque Chiltern Hills, offering distances of 10 km, 25 km, and 50 km. Participants can run for free by committing to raise funds for Humanity Direct, which supports life-changing medical operations for children in developing countries. The event features a well-marked circular route starting and finishing at Princes Risborough School, with checkpoints providing food and water. The challenge is suitable for both first-time ultra runners and seasoned athletes, promoting a supportive atmosphere while contributing to a charitable cause. Visit the organization's website for the most recent information.