The Brathay 10in10 sees runners tackle 10 marathons in 10 days, completing the route of the ASICS Windermere Marathon, every day for 10 consecutive days. It is considered one of the "UK's toughest running events".

The 10in10 raises money for Brathay Trust and their work to improve the life chances of vulnerable children and young people in the UK.

https://www.brathaychallenges.com/events/running/10in10