50 Mile Grand Slam
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About the race
50 Mile Grand Slam 2026 is a four-race endurance challenge from Centurion Running. It combines four 50-mile events held as the All Four 2026 50 Mile Events: South Downs Way 50, North Downs Way 50, Chiltern Wonderland 50, and Wendover Woods 50. Runners complete all four for the Grand Slam, spanning spring to late autumn 2026.
Entry fees are £468, with UKA discounted £460. The package includes the four races, plus optional XCover refund protection. Organised by Centurion Running, this in-person challenge totals 200 miles across varied UK terrains.
The event is offline and in-person, emphasizing endurance through varied landscapes. Visit the organization's website for the most recent information.