Arundel resident aims to complete 24 triathlons in 24 hours for Alzheimer’s Research UK

On 27 and 28 June 2025, Mark Walford from Ford, near Arundel, will be attempting to complete a Super Sprint Triathlon on the hour every hour for 24 hours to raise money for Alzheimer’s Research UK, the UK’s leading dementia research charity.

The 41-year-old health and safety trainer and father of two aims to raise £3,000 by completing a 400-meter swim, a 10-kilometer bike ride, and a 2.5-kilometer run every hour, starting at 7pm on Friday 27 June. He’s using the community pool at St Peter’s Primary School in Cowfold, near Horsham, for his swim and will be cycling 10km through the local villages and then running through Cowfold for his 2.5km runs.

Mark’s inspiration comes from having delivered training in hundreds of care homes over the last 20 years. He said:

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“Having seen firsthand the effects of dementia on thousands of people, I’m driven to be a part of the journey towards a cure. Statistically, 1 in 2 people in the UK will be touched by dementia, either personally or in a close loved one.

Mark has had great support from fellow members of Tuff Fitty Triathlon Club, including Adam Stringer.placeholder image
Mark has had great support from fellow members of Tuff Fitty Triathlon Club, including Adam Stringer.

“By challenging myself to do something that seems crazy but also achievable, I can raise money and awareness of the work of the UK’s leading dementia research charity.”

Dementia affects almost one million people in the UK alone and has a huge impact on families. It is most commonly caused by Alzheimer’s disease. Alzheimer’s Research UK is working to revolutionise the way dementia is treated, diagnosed and prevented and Mark aims to raise £3,000 with his 24-hour challenge.

Mark continued:

“I have been training since October 2024 for this;10-14 hours a week, juggling family life, work and training. I love triathlon but it can be a selfish pursuit, so I decided this year I would do something bigger and more impactful. My triathlons usually last just over an hour as I enjoy the speed. I have always thought of doing an ironman but if I asked for sponsorship for this, I would feel guilty as it was an ambition of mine, so I had to come up with something unique.

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Mark Walford during an 8-hour training session earlier this year.placeholder image
Mark Walford during an 8-hour training session earlier this year.

“I have been fascinated by 24 hour challenges since childhood and, after months of different ideas, I came up with 24 super sprints in 24 hours. To my knowledge this has never been done before and is a test of mind, body and spirit.

“Training has included waking up at midnight to cycle and run through the night, 8-hour back-to-back training sessions, and many hours of swimming, cycling and running.

“I have been blown away by the support of the local community. For example, the team at Cowfold Pool have been great at letting me have 24-hour access. I delivered a school assembly for the pupils at St Peter’s School, and they’ve now been inspired to organise a triathlon later in the year for the children.”

Mark is on the final countdown to 27 June now and his training schedule has tapered to allow him to conserve energy. Anyone wishing to come and cheer him on as he attempts his challenge is welcome to join his support team at the Hare and Hounds, Henfield Road, Cowfold RH13 8DY from 7pm on Friday 27 June. And at Cowfold Community Pool any time after 8am on 28 June.

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Shelle Luscombe, Regional Fundraising Officer for Kent and Sussex at Alzheimer’s Research UK, said:

“We’re so grateful to Mark for supporting Alzheimer’s Research UK. Some 28,316 people across Sussex alone are estimated to be living with dementia. Fantastic fundraising efforts like this will help us get closer to a cure for people with dementia and their loved ones. We all wish Mark the best of luck!”

To sponsor Mark, visit https://www.justgiving.com/page/mark-walford-24hour-tri. And you can follow his challenge attempt on Instagram: https://www.instagram.com/24hourtri.

For further information about Alzheimer’s Research UK, or to find out more about fundraising for the charity, call 0300 111 5555 or visit www.alzheimersresearchuk.org.

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