Showcasing the best of the Chilterns & some of the UK's most astounding countryside on a route full of surprises - forests, ancient footpath, nature reserves & the famed hills.
Starting by the Thames in the beautiful town of Henley, you'll set out on an incredible route following the Chiltern Way, the ancient Icknield Way and one of the oldest roads in England; the historic Ridgeway trail. Descending into Princes Risborough, you'll cross the finish line where an evening of celebrations and a massive sense of achievement await.
Taking on an ultra trek or run is a serious challenge and tough for most people, but also achievable with the right training and plan which you'll get access to when you sign up. This challenge is fully supported meaning they're the perfect way to have-a-go at a longer distance.
This could be your challenge of this special year! Signing up now gives you plenty of time to prepare, train and fundraise.
"This was the first time that I have ever done a challenge like this. It was brilliantly organised and sign posted. The rest stop offered fantastic choice and amazing pastries. The prosecco at the end was very welcome! Great sightseeing!" Nikki
"I had surgery in June 2017 and the only thing was able to do afterwards was walk... so that's what I did ! 4 stone lighter now and fitter and stronger than I have ever been." Mark
"Lost weight, started running after never being sporty at all as I had been very overweight since I was a child. Now I have completed 4 of the 100k Ultra Challenges!" Lisa
Fundraising for a cause close to your heart is part of the challenge and you'll receive a wealth of support, advice and tips from your chosen charity to make sure you smash your fundraising target.
Rest stops every 10-15km | Marquee cover & rest area | Challenge App | Finish times & Certificate | Medics & First Aid | Hot food, snacks & drinks | Chip timing & tracking | Full route signage & maps | Emergency support | Sports massage | Medal, finisher T-shirt & fizz! | Free shuttles from the finish
View further information and download full colour brochure by choosing a charity.
Get instant access to full challenge details including how to sign up.
Full details about costs and fundraising.
If you would like any help or advice, please contact our helpdesk.
Do it for charity and fundraise for your chosen cause - choose a charity below to get started.
The UK’s leading support and research charity for the 850,000 people living with dementia, their families and carers.
Every 3 minutes someone develops dementia, a progressive brain disease that slowly destroys memory and the ability to carry out the simplest tasks and it can happen to anyone at any time. Your support of Alzheimer's Society directly helps over 100,000 people through their local services across the UK and to fund their commitment to spend £150 million on cutting-edge research over the next decade to improve care and work towards a cure.
Registered no: 296645
Transforming the lives of vulnerable children & young people in the UK.
Tackling the challenges faced by the UK’s most vulnerable children and young people, both physical and mental, has never been more complex.
Barnardo's currently protects and supports over 300,000 children, young people, parents and carers to help every child fulfil their potential through their local services, campaigns and research. £25 could provide a young person with bedding and a safe place to sleep or £100 could provide four mentoring sessions to a young person leaving care.
Registered no: 216250 / SC037605
Coronary heart disease is the UK's single biggest killer but the BHF is leading the fight against it.
Seven million people of all ages in the UK live with heart and circulatory diseases, which kill one in four people. The British Heart Foundation has already funded lifesaving research, campaigns and ongoing care and support for patients.
Their aim is to fund more than £1bn of cardiovascular research over the next ten years but they need your help. Every £25 could pay for one hour of research by one of their early career scientists or £20 could provide an hour of Helpline support from a Cardiac Nurse.
Registered no: 225971
Know Diabetes. Fight Diabetes.
Diabetes UK is the charity leading the fight against the most devastating and fastest growing health crisis of our time, creating a world where diabetes can do no harm. Diabetes affects more people than any other serious health condition in the UK - more than dementia and cancer combined. That means we need to take action now. It’s a fight that involves all of us – sharing knowledge and taking diabetes on together until we achieve our vision. Join us.
Registered no: 215199
Granting magical wishes to children fighting life-threatening conditions.
Make-A-Wish Foundation UK was established in the UK in 1986 and has so far granted 9000+ magical wishes to children with life threatening conditions meaning that seriously ill children, their parents and families get to enjoy an unforgettable day.
A child's life shouldn't be about hospitals and illness, it should be about wonder, joy and hope. Our children's wishes are varied, from walking with dinosaurs to starring in their own films, meeting a celebrity hero to going on that holiday of a lifetime. No two wishes are the same, and at Make-A-Wish Foundation UK we are commited to making their personal dreams a reality - at a time when they need it most.
Your support will help us grant more magical wishes.
Registered no: 295672/SC037479
Every childhood is worth fighting for.
Together we can help children who’ve been abused to rebuild their lives. Together we can protect children at risk. And, together, we can find the best ways of preventing child abuse from ever happening.
We change the law. We visit schools across the country, helping children understand what abuse is. And, through our Childline service, we give young people a voice when no one else will listen.
But all this is only possible with your support.
Every pound raised, every petition you sign, every minute of your time, will help make sure we can fight for every childhood.
Registered no: 216401/SC037717
Pay the sign-up fee to secure your place on the challenge.
Commit to fundraising this amount for charity. The cost of the challenge is deducted from your fundraising and the charity receives the balance.
25km £5 entry + raise £245. 50km £10 entry + raise £395. 100km £15 entry + raise £595.
This is your chance to do something amazing and support a fantastic cause - don't let the fundraising put you off! Charities are great at helping people fundraise and you're going to have heaps of fun in the process.
Get in touch with the team now to find out more and secure your place in the challenge.