Marsden March:
The Big Trek
Walk a marathon in a day to support world-leading cancer research at The Royal Marsden.
Start and finish at The Royal Marsden, Sutton, trekking scenic trails that swap city streets for open skies. Every mile helps fund the development of life-saving treatments.
Will you take on the challenge?
When: September 2026
Where: The scenic Surrey countryside
Distance: 26.2 miles
The Great Outdoor Challenge Experience
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Nature-focused route
A scenic course designed to maximise time outdoors with varied terrain and changing views.
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Mind & body benefits
Step away from the rush of daily life, breathe deeply, and recharge as you walk.
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Inclusive Space
Welcoming walkers of all speeds, with checkpoints and rest stops along the way.
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Achievement Unlocked
Completing a marathon distance trek while raising important funds for the Royal Marsden is a true test of stamina and determination.
Walk with purpose.
Marsden March: The Great Outdoors Challenge is more than a personal challenge — it’s a day of unity, reflection, and achievement. Along the way, you’ll share the route with others whose lives have been touched by cancer, creating moments of connection that make the miles meaningful.
Every mile you walk helps fund groundbreaking research, treatment, and care for people with cancer. Your efforts will directly support The Royal Marsden’s work to diagnose cancer faster, develop better treatments, and give patients the very best chance of survival.
About The Royal Marsden Cancer Charity
The Royal Marsden Cancer Charity raises money to improve the lives of people affected by cancer.
With your help we can ensure our nurses, doctors and research teams can provide the very best care and develop life-saving treatments which are used here in the UK and around the world.
From funding state-of-the-art equipment and groundbreaking research, to creating the best patient environments, we never stop looking for ways to improve the lives of people affected by cancer.
