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dementia uk supporters completing the thames path challenge

Thames Path Ultra Challenge 2027

Walk, jog or run up to 100km from Putney to Henley along England’s greatest river in this iconic Ultra Challenge.

The majestic River Thames provides a fantastic backdrop for an unforgettable challenge, with more than 3,000 people all walking, jogging, and running towards their finish line.

Challenge yourself or your team on this iconic Ultra Challenge at whatever pace suits you. By fundraising for Dementia UK, you’ll make a real impact for families facing dementia while achieving an incredible personal goal.

Thames Path Ultra Challenge 2026 route

From the starting point in Bishops Park, Fulham, you’ll head over Putney Bridge onto the south side of the River Thames and the iconic towpath. You’ll carry on upstream through Richmond, past Hampton Court and out to Runnymede for the halfway stop. Enjoy the wonderful scenery en route as the city turns to countryside, all along a flat and fast path. Full 100km and second-day 50km challengers will continue to follow the river past the historic towns of Windsor and Marlow, finishing in the scenic Henley-on-Thames.

Check out the route map

Expect fully marked routes, marshals and medical care to support you along the way, plenty of rest stops with food, drink and massage, and an unbeatable sense of community. You’ll cross the finish line to receive your medal, finishers’ t-shirt and a hot meal to enjoy as you bask in the glow of supporting families living with dementia.

Join the UK’s number one series of treks and trail runs in 2027 and push yourself further with the Thames Path Ultra Challenge.

Sign up to take part

Sign up to take part in this incredible Ultra Challenge and support families facing dementia.

Sign up now

The Ultra Challenge Series, run by Ultra Challenge, is the UK’s number one series of treks and trail runs. Dementia UK is a proud series partner of the Ultra Challenge Series.

Between January and October 2027, you can take on some of the UK’s most spectacular trails to support families facing dementia. With 24 events – from the dramatic cliffs of the Isle of Wight to the rugged Scottish Borders – there’s an Ultra Challenge for everyone.

Throughout each event weekend, challengers will take on distances from 10km up to 100km, creating an unbeatable atmosphere and real sense of community spirit.

You can choose to walk, jog or run your challenge, with unparalleled event support every step of the way. There are regular rest stops with food and drink; fully signposted routes; marshals on the course and walking with you; and exceptional medical and welfare coverage including massage, hot meals and a huge finish line celebration. With the support of Ultra Challenge, you can achieve more than you ever expected.

When you take on an Ultra Challenge for Dementia UK, you’ll raise vital funds to ensure no one faces dementia alone. We’ll provide you with fundraising tips and support and you’ll have access to an event app with all the information you need to get the most out of your Ultra Challenge.

Find your Ultra Challenge

Distance options vary according to each Ultra Challenge. Typical distances are 10km, 25km, 50km, 75km and 100km. The full 100km challenges can be undertaken all in one go or over two days.

Most challenges have options to walk, jog or run, although a handful are walking-only events. You can also run or walk competitively with the Trailblazerz and Ultra March options for select events.

There are two funding types to choose from, and costs vary according to your route/distance:

  • Charity fundraising: pay a small registration fee and raise a minimum amount for Dementia UK, and we’ll cover the cost of your place. 50% of your minimum fundraising pledge must be raised and received by Dementia UK by your fundraising deadline, usually three weeks prior to your event. Dementia UK supporters receive 50% off their registration fee, as we are an Ultra Challenge series partner
  • Self-fund with fundraising: pay for your place in full then raise as much as you can for Dementia UK, with no minimum fundraising target

Click ‘Sign up’ or explore our Ultra Challenge calendar for full challenge details and to register for your chosen event and distance. Please also read our fundraising terms.

The Ultra Challenge Team has a useful help centre page that covers many frequently asked questions. You can also download the Ultra Challenge app for help with your training, logistics and more.

If you have any specific event questions or your question is not covered in the FAQs or on the app, please contact the Ultra Challenge Team at info@ultrachallenge.com or on 020 7609 6695 (Monday-Friday 9am-5pm).

Right now, nearly one million people are living with dementia in the UK. Too often, families struggle to find support, leaving them feeling exhausted, overwhelmed and alone.

The funds you raise will ensure more families can access the life-changing support of our dementia specialist Admiral Nurses. Together, we can make sure no one faces dementia alone.

Read Will and his mum Ronnie’s story about how Ronnie’s diagnosis of Alzheimer’s disease has impacted their lives, and how Admiral Nurses are providing their family with a lifeline.

We know you’re committed to fundraising for Dementia UK, and we’re committed to helping you!

As part of Team Dementia UK, you will receive:

  • a branded Dementia UK technical top – delivered two to three weeks before event day
  • access to training plans and videos to help you get ready for your event
  • expert fundraising advice and support from our Fundraising Team, with a dedicated Events Manager
  • fundraising materials for your activities, including fundraising guides, posters, banners, t-shirts and collection items to help you reach your goals
  • access to our online fundraising resources

You can also use our downloadable fundraising resources to encourage people to support your Ultra Challenge and fundraising.

If you need any fundraising support or have questions about taking part in an Ultra Challenge for Dementia UK, contact our Challenge Events Team at events@dementiauk.org

Getting started

Fundraising ideas

Organising fundraising activities alongside your main challenge will help you smash your goal. Here are some ideas:

  • Host a quiz
  • Arrange a raffle
  • Hold a sweepstake on how long your challenge will take, or how many steps you’ll cover
  • Organise a bake sale at home, at work or in your community
  • Create a sponsored playlist, where supporters donate to add their choice of song to your challenge soundtrack

JustGiving 

Setting up a JustGiving page is a great way to fundraise online. Share your link with family, friends and colleagues and watch the donations roll in.

You can use JustGiving to explain why you’re taking on your challenge for Dementia UK, keep track of how much you’ve raised and even share your training progress using Strava so your supporters can see how well you’re doing. The event organisers have set up official events on JustGiving so make sure you connect to the right event on your page.

The more you update and share your JustGiving page, the more donations you’ll receive. Contact events@dementiauk.org if you need more advice.

Gift Aid

If your supporters are UK taxpayers and their donation is voluntary (not proceeds of a sale), we can claim an extra 25p for every £1 donated, at no extra cost to them. Make sure they fill in the Gift Aid form or tick the correct boxes if they’re donating online.

How to pay in your fundraising

If you’re fundraising through JustGiving and your page is connected to Dementia UK, the donations will automatically come to us. If you’ve got cash to pay in, you can do this online, by phone, by bank transfer or by post.

How to pay in your fundraising

How your money will be used

Every donation you raise, big or small, will make a huge difference to families facing dementia. Did you know a donation of just £4 to your fundraiser could pay for the telephone costs of one family calling our free Helpline for immediate support?

See the impact that your fundraiser could make:

  • £ 250

    could fund a new Admiral Nurse

    to run a full day of face-to-face appointments for families affected by young onset dementia (where symptoms develop under the age of 65).

  • £ 557

    could pay for two Admiral Nurses

    to answer calls on our Helpline on a Sunday, when other dementia services are closed.

  • £ 1 ,250

    could fund a new Admiral Nurse

    for a whole week to support a community where people are struggling to access local dementia services.

dementia uk supporter lucy who completed the the thames path challenge

“After completing the Paris Marathon earlier this year, I knew I wanted to push myself further, so the Thames Path Ultra 100k felt like the perfect challenge. It was tough, but knowing I was doing it for Dad gave me the motivation to keep putting one foot in front of the other.”

Lucy, who completed the 100km Thames Path Ultra Challenge in 2026
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