Brathay 10in10
Always double-check with the organizer's website! This page may contain affiliate links.
About the race
The Brathay 10in10 is a stage race in which participants run ten marathons over ten consecutive days, following the official Windermere Marathon course around Windermere, England's largest lake. The event was first staged in 2007 as the world’s original 10 marathons in 10 days race and is based at Brathay Hall, on the shore of Windermere. Brathay Hall serves as the start and finish area and provides accommodation, food and a base for recovery and rest throughout the event. Support on the event includes daily sports rehabilitation and massage provided by university sports rehabilitation students supervised by clinical staff, access to sport and exercise medicine expertise, and on-course support from volunteers and event staff.
Nutrition products and race fuel are provided by event partners, and a retail partner supplies running equipment and kit. Therapists and a medical team assist runners with pre and post marathon care. Completing the event grants automatic membership of the Brathay 10in10 Club. By the date given in event materials, 174 runners had completed the challenge, contributing a total of 249 completed 10in10s between them.
The event also supports the work of the Brathay charity with children and young people. The 2027 edition is scheduled for 14 May 2027 and entries close 31 August 2026. Visit the organization's website for the most recent information.
