Take on the only tower run challenge with its finish in a sky-scraping urban oasis. Climb the capital's legendary Walkie Talkie building to its unique Sky Garden summit and raise money to help seriously ill children at Great Ormond Street Hospital.

We fundraise to enhance Great Ormond Street Hospital’s ability to transform the health and wellbeing of children and young people. Donations help to fund advanced medical equipment, child and family support services, pioneering research and rebuilding and refurbishment.