26th September 2026
Chiltern 50 Ultra Challenge 2026
Take in the beauty of the Chilterns countryside as you walk, jog or run up to 50km for Dementia UK.
Walk, jog or run along the spectacular Isle of Wight coast with Dementia UK on May bank holiday weekend.
Epic challenges need stunning settings, and the Isle of Wight’s coastal path provides just that. Make your bank holiday weekend memorable by taking on this iconic Ultra Challenge, while raising vital funds and awareness to support families facing dementia.
You’ll set out from Chale basecamp along the spectacular southern cliffs, past the iconic Needles and up to charming Cowes. Full island challengers will continue to Bembridge Beach and Ventnor before heading back to basecamp for a celebratory finish.
There will be fully marked routes with marshals and medical care to support you along the way, plenty of rest stops with food, drink and massage, and an unbeatable community spirit. You’ll cross the finish line to receive your exclusive medal and finishers’ t-shirt – plus an amazing sense of achievement for supporting families living with dementia.
With distances from 10 miles to the full 107km and options to walk, jog or run at your own pace, there’s an Isle of Wight Ultra Challenge for everyone!
Join the UK’s number one series of treks and trail runs in 2027 and push yourself further with the Isle of Wight Ultra Challenge.
Sign up to take part in the Isle of Wight Ultra Challenge and help us support families facing dementia.
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. 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 all at the same time, 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, 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.
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:
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.
When you support our charity, you’re helping us grow the number of dementia specialist Admiral Nurses, who provide life-changing support for the whole family. With your help, no one will face 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 them both 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:
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.
Organising fundraising activities alongside your main challenge will help you smash your goal. Here are some ideas:
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 in your fundraising pack or tick the correct boxes if they’re donating online.
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.
Every penny you raise will make a huge difference to families facing dementia. Each donation, no matter how big or small, will help you reach your target. Did you know that someone simply donating £4 to your fundraiser could pay for the telephone costs of one family calling our free Helpline for immediate support.
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).
to answer calls on our Helpline on a Sunday, when other dementia services are closed.
for a whole week to support a community where people are struggling to access local dementia services.
- Tim who ran the full 100km over two days“Having never been to the IoW I thought the best way to see it would be to run around it with a mate... What definitely sticks with me from the challenge is some of the amazing scenery and the spirit of camaraderie throughout.”
26th September 2026
Take in the beauty of the Chilterns countryside as you walk, jog or run up to 50km for Dementia UK.
27th September 2026
Sign up to take part in the 2026 Berlin Marathon and raise vital funds for Dementia UK.
1st October - 31st October 2026
Join us to Walk 62 Miles in October 2026 and support families affected by dementia. Take steps for a worthy cause today!
Just £25 could pay for a carer to receive an hour of one-to-one support from a dementia specialist Admiral Nurse on our free Helpline.