50 Mile Grand Slam

The 50 Mile Grand Slam 2026, organized by Centurion Running, is a series of four challenging 50-mile ultramarathons held across iconic UK trails. The event includes the South Downs Way 50, North Downs Way 50, Chiltern Wonderland 50, and Wendover Woods 50, taking place between April and November 2026. Participants experience diverse scenic routes through the South Downs, North Downs, Chiltern Hills, and Wendover Woods, offering a mix of terrain and natural beauty.

The Grand Slam celebrates endurance and trail running in a supportive atmosphere, attracting seasoned ultrarunners aiming to complete all four events within the year. Visit the organization's website for the most recent information.