Take on 25 km or 50 km

Walk, Jog, or Run it

As a Team or an Individual…

.. for You or for a Charity

Chiltern 50 Challenge
Sat 24 Sept 2022

This end of season 50 km looped route covers some of the best of the Chilterns countryside, with historic trails, rolling hills, nature reserves, and fantastic views. Starting & finishing at our base-camp in Henley, there’s a Saturday night celebration BBQ, bar & entertainment, with extensive on-site camping & parking options. It’s a route with real variety and some wonderful scenery – and it’s all easily accessible from London. You’ll get full support & hospitality all the way, and with 25 km options also available – there’s a Chiltern Challenge for everyone!

Autumn Deal Now On!

FREE Tech T Shirt worth £15
& Save 5% Off Reg Fee

The Ultra Challenge Experience

Endurance events for a wide range of fitness & ages. Choose your Challenge – do it at your pace, and there’re 14 events in the Series. Our support enables you to go further, whilst enjoying the great outdoors & camaraderie. There’re marquee rest stops, lots of food & drink, medical & massage teams, with a fully signed route to guide you. A big finish-line  celebration awaits with an amazing sense of achievement, and once the aches subside you’ll feel energised, and up for more of life’s real challenges!

Good preparation & smart planning are key, and from the moment you sign up you’ll have access to our Challenge App – with training guides, optional training walks, maps, online forums, and the latest news & updates.

Rest Stops every ~12.5 km with ‘major’ ones every ~25 km, and are much more than the shaky gazebo with water that you see on some events. We’ve marquee cover, large medical & welfare tents, catering services, seating areas for recovery, changing rooms, and a friendly welcome!

There’re pink arrows to guide you, distance markers, glow-sticks at night, hazard signs, and a route map in the App. Our ‘Trek Masters’ organise group departures at night so nobody has to walk solo. Our chip timing system enables our Control Room, and your friends / family, to track your progress through the Rest Stops.

Keeping you well fed & hydrated is key. We pride ourselves on the quantity & quality of our catering, and whichever distance you are on – meals, snacks & drinks are included – so no need to carry much!

  • Snacks & drink stops every 12.5 km
  • Snacks – from the healthy to treats
  • Main meals / hot food every 25 km
  • Energy drinks
  • All dietary requirements catered for
  • Lighter options for ‘runners’
  • BBQ finishers meal

We generally have a ~50 km campsite for rest & sleep if you’re on the 2 day ‘Daylight’ 100 km option, or if you finish / start a 50 km ‘half’ Challenge. Book an inclusive package or ‘pitch your own’ – there’re showers and chill out areas.

We’ve experienced Doctors, Paramedics, First Aiders, Podiatrists, and Massage Teams at Rest Stops. There’re ‘Self Help’ areas with blister plasters, talc, Vaseline, and tape if you want to patch your own feet. Our mobile Emergency Medical Teams are only a phone call away, via our 24 hour Control Room

We don’t want you to forget that finish-line moment – our Cheer Squad will ensure you won’t! You’ll get a medal, finisher’s T-shirt, and a glass of fizz, before heading to a BBQ and a well earned rest. Download your official Challenge certificate when you’re ready.

There’re shuttles to local train stations for onward travel, and most finish lines have parking so supporters can meet you. We’ve bus ‘transfers’ to / back to key venues (eg the start) – and check out the ‘Bookable Extras’ for details of all transport options.

Your Challenge,
Your Way!

Whether you’re a walker and new to challenge events, an experienced trekker, a marathon enthusiast upping the distance, or a seasoned ultra runner after UTMB points – there’s an Ultra Challenge for you! Walk, Jog, or Run – as an Individual or a Team, for a charity of your choice or just for you. The Chiltern Challenge is fun, safe, and rewarding – with full support all the way, enabling you to push yourself further and then celebrate your achievements at the Henley base-camp with a BBQ, bar & entertainment

Date: Sat 24 Sept

Start & Finish: Henley Showground

Distance & Elevation: 50 km & 920 m elevation

Date: Sat 24 Sept

Start & Finish: Henley Showground

Distance & Elevation: 25 km & 500 m elevation

Date: Sat 24 Sept

Start: Henley Showground

Finish: Lewknor

Distance & Elevation: 25 km & 400 m elevation

Date: Sat 24 Sept

Start: Lewknor

Finish: Henley Showground

Distance & Elevation: 25 km & 500 m elevation

2022 Route Map

Download Factsheet

All you need to know about the Challenge – a detailed overview of the options & how you can take it on. Print it off or send it to your friends! 

How to Join

Self Funding
for You

Pay for your place in full, with no fundraising target but you can raise of you like!

Full Sponsorship for Charity

Pay a small registration fee & commit to fundraise for a charity of your choice.

Mixed Funding for Charity

Pay half your place, & fundraise a smaller target for your chosen charity.

Autumn Deal Now On!

FREE Tech T-shirt worth £15
& Save 5% Off Reg Fee
Use Code AUTUMN22 at checkout

Charity Partners

We’re proud to work with a range of fantastic charities, which will benefit from the £7+ million fundraising each year. Our Series Partners are some of the UK’s major national charities, and there’re also regional and local charities as Challenge Partners for each event. Choose to fundraise for a Charity Partner and they’ll provide support to help you reach your target!

Our Charity Partners

or fundraise for over 500+ others

Check out the Challenge Options

Ready to sign up now?

14 Amazing Challenges

90,000 adventurers have taken on an Ultra Challenge®, raising over £33 million for charities, and the 14 unique events make up the UK’s biggest & best series of treks & runs. Whichever challenge you choose, you’ll get full support so you can set a new goal, enjoy the great British outdoors, and push yourself further on a high quality inspirational event. 


Lake District Challenge

11/12 June ’22

1 of 12

Isle of Wight Challenge

10/11 July 2021

2 of 12

London 2 Brighton Challenge

28/29 May ’22

3 of 12

South Coast Challenge

4 – 5 Sept 2021

4 of 12

Jurassic Coast Challenge

14/15 May ’22

5 of 12

Thames Path Challenge

11 – 12 Sept 2021

+ Thames Bridges Trek

+ Thames Moonlight 10 Walk

+ Henley 10K

6 of 12

S.W. Coast 2 Coast Challenge

6 Aug 2022

7 of 12

Peak District Challenge

9 – 10 July 2022

8 of 12

Cotswold Way Challenge

25 – 26 June 2022

9 of 12

Yorkshire Challenge

17 – 18 July 2021

10 of 12

Chiltern 50 Challenge

26 Sept 2021

11 of 12

London Winter Walk

28 & 29 Jan ’22

12 of 12

Autumn Deal


Use Code AUTUMN22 at Checkout


Deal Excludes: Halloween & Winter Walks, & 10km / 10 mile events.

All 500+ Charities you can fundraise for

AP = Associate Partner. Click the Charity name to visit their website!

Cats Protection (AP)

Dogs For Good
Dogs Trust
Explorers Against Extinction
Foal Farm Animal Rescue (Friends of Animals League)
Marine Conservation Society
Ocean Generation
Senior Staffy Club
Support Dogs
Sussex Wildlife Trust
The Humanimal Trust
The Maggie Fleming Animal Hospice and The Karass Sanctuary
Whale and Dolphin Conservation
World Land Trust

Against Breast Cancer
Blood Cancer
Bone Cancer Research Trust
Brain Tumour Research
Cure Leukaemia
Dragonfly Cancer Trust
Exeter Leukaemia Fund
Institute of Cancer Research (ICR)
Involve Community Services – Cancer Support Network
It’s Good2 Give
Jo’s Cervical Cancer Trust
Kidney Cancer Support Network
LATCH Welsh Children’s Cancer Charity
Lingen Davies Cancer Fund
Look Good Feel Better
Lymphoma Action
Mesothelioma UK CIO
Mummy’s Star
Myeloma UK
Pancreatic Cancer Action
Pancreatic Cancer Research Fund
Prostate Cancer Research
Roy Castle Lung Cancer Foundation

Sarcoma UK (AP)


Shine Cancer Support

Team Lewis Trust

Team Verrico

The Bowel Movement

The Cancer Club

The Cancer Club

The Eve Appeal (AP)

The Institute of Cancer Research
The Robin Cancer Trust
The Robin Cancer Trust
The Royal Marsden Cancer Charity
The Urology Foundation
Topic of Cancer
Wessex Cancer Trust


Abby’s Heroes

Adoption UK


Bliss (AP)

BOSP – Brighter Opportunities for Special People

Cardiac Risk in the Young


Child Bereavement UK (AP)

Child Brain Injury Trust

Children’s Heart Surgery Fund

CHUMS Charity

Cochlear Implanted Children’s Support Group


Daisy’s Dream

Dingley’s Promise

Diverse Abilities

Doing it for Dan


Dreams Come True (AP)

Dylan’s Quest

Heartline Families

Jamie’s Farm

John Thornton Young Achievers Foundation

Just Like Us



Me2 Club


MYTIME Young Carers

National Deaf Children’s Society

Ollie Young Foundation



Parenting Special Children 

PC Nicola Hughes Memorial Fund

Place2Be (AP)

Railway Children

Rainbow Trust Children’s Charity

Rockinghorse Children’s Charity

Ronald McDonald House Charities

Slide Away

St Catherine’s

Starlight Children’s Foundation

Street Action

The Childhood Trust

The Children’s Hospital Charity

The Compassionate Friends

The Elizabeth Foundation

The Grand Appeal

The Human Milk Foundation


We Are Beams


Winston’s Wish (AP)

Bright Ideas for Tennis
British Dyslexia Association (AP)
Coach Core Foundation
Cotswold Way Association
Student Minds
Teach First
The AHOY Centre Charity
The Children’s Wood
The Hebe Foundation
YHA (England and Wales)
Youth Adventure Trust

Acorns Children’s Hospice

Arthur Rank Hospice Charity

Children’s Hospice South West

Compton Care

Countess Mountbatten Hospice

Cynthia Spencer Hospice

Douglas Macmillan Hospice

East Anglia’s Children’s Hospices

East Cheshire Hospice


Farleigh Hospice

Forest Holme Hospice Charity

Haven House Children’s Hospice

Havens Hospices

Hospice of the Good Shepherd

Hospice UK

Hospice UK

Isabel Hospice


Martlets Hospice

Naomi House Children’s Hospice

Phyllis Tuckwell Hospice Care

Pilgrims Hospices

Rennie Grove Hospice Care

Richard House Children’s Hospice

Salisbury Hospice Charity

St Ann’s Hospice

St Barnabas Hospice

St Catherine’s Hospice

St Christopher’s Hospice

St Helena Hospice

St John’s Hospice

St Luke’s Hospice (Basildon & District)

St Lukes Hospice (Basildon & Thurrock)

St Luke’s Hospice (Harrow and Brent)

St Margarets Hospice

St Michael’s Hospice (North Hampshire)

St Nicholas Hospice Care

St Peter & St James Hospice

St Peter’s Hospice

St Raphael’s Hospice

St Wilfrid’s Hospice (Chichester)

St Wilfrid’s Hospice (Eastbourne)

The Myton Hospices (AP)

Willen Hospice

Woking & Sam Beare Hospices

Above & Beyond
Addenbrooke’s Charitable Trust
Birmingham Children’s Hospital Charity
Birmingham Women’s Hospital Charity
Countess of Brecknock Hospice Trust
Friends of PICU
King George & Queen’s Hospitals Charity
Manchester Foundation Trust Charity
Portsmouth Hospitals Charity
Royal Brompton & Harefield Hospitals Charity
Royal Manchester Children’s Hospital Charity
Spread a Smile
University Hospitals Dorset NHS Charity
Valley Hospital Charity

Action for M.E.
Air Ambulance – Kent Surrey Sussex
Allergy UK
Asthma UK
Ataxia UK
Bowel Research UK
Bowel Research UK
Brain Tumour Reseach Campaign
Brighton and Sussex University Hospitals Charity
British Liver Trust
British Lung Foundation
British Skin Foundation
Burning Nights CRPS Support
Canine Partners
Cardiomyopathy UK
Cianna’s Smile
Cleft Lip and Palate Association
Deafblind UK
Dementia UK
Different Strokes (AP)
Duchenne UK
Encephalitis Society
Epilepsy Action
Facial Palsy UK
Fight for Sight
GRACE (Gynae-oncology Research And Clinical Excellence)
Graham Layton Trust
Great Western Air Ambulance Charity
Group B Strep Support
Guillain-Barré & Associated Inflammatory Neuropathies (GAIN)
Guts UK Charity (AP)
Hampshire Medical Fund
Harry’s Hydrocephalus Awareness Trust (Harry’s HAT)
Hearing Dogs for Deaf People
Huntington’s Disease Association
Ichthyosis Support Group
Imperial Health Charity
Kidney Research UK
London’s Air Ambulance
Magpas Air Ambulance
Meningitis Now
Midlands Air Ambulance Charity
Moorfields Eye Charity
Motor Neurone Disease Association (AP)
MPS Society
MS Trust
Multiple System Atrophy Trust
NASS – National Ankylosing Spondylitis Society
Nephrotic Syndrome Trust (NeST)
Noonan Syndrome Association
Northamptonshire Health Charity
Nystagmus Network
Operation Smile UK
Overcoming MS
PAPYRUS Prevention of Young Suicide (AP)
Parkinson’s Care and Support UK
PKD Charity
Retina UK
Reverse Rett
Royal Osteoporosis Society
Sands, Stillbirth & Neonatal Death Charity
Sands, Stillbirth & Neonatal Death Charity (AP)
Shine – Spina Bifida. Hydrocephalus. Information. Networking. Equality.
South Central Ambulance Charity
St George’s Hospital Charity
Stroke Association
SUDEP Action
Support 4 Sunflowers
Sussex Community NHS Charity
The Cure Parkinson’s Trust
The Ectopic Pregnancy Trust
The Ectopic Pregnancy Trust
The Garwood Foundation
The Haemophilia Society
The Lullaby Trust
The MASIC Foundation
The Meath Epilepsy Charity
The National Brain Appeal (AP)
The Sickle Cell Society
Thrombosis UK
Thyroid UK
UK Infantile Spasms Trust
UK Sepsis Trust
Versus Arthritis
Walk the Walk
Zellweger UK

Buckinghamshire Mind
Cameron Grant Memorial Trust
Combat Stress
Cruse Bereavement Care
Dorset Mind
Dyspraxia Foundation
Guernsey Mind
Heads On
Manchester Cares
Mental Health Foundation (AP)
Mental Health Research UK (AP)
Mental Health UK
Mind in Brent, Wandsworth and Westminster
Mind in West Essex
Music for my Mind
Our Time
PANDAS Foundation
Rethink Mental Illness
Sport In Mind
The Survivors Trust
Time To Talk Mental Health UK
Woking Mind

ABF The Soldier’s Charity (South West)
Blesma, The Limbless Veterans (AP)
RAF Benevolent Fund
Royal Air Forces Association
Royal Navy and Royal Marines Charity (AP)
Royal Signals Charity
Scotty’s Little Soldiers
SSAFA, the Armed Forces charity

ActionAid UK
British Red Cross
Creating Better Futures
Farm Africa
Guildford-Mukono Link
Learning for Life UK
Lemur Love
Medecins Sans Frontieres UK
Mehiel Foundation
Mind the Gap – Africa
New Futures Nepal
Refugee Action
Release International
Talent Beyond Boundaries
The Adventure Boutique Foundation
The Hummingbird Refugee Project
The Mission to Seafarers
Village Africa

Access Adventures
Age UK Medway
Alabare Christian Care & Support
Amnesty International UK
Ben – Motor & Allied Trades Benevolent Fund
Central London Samaritans
Centre for Women’s Justice
Charity Link
Church Homeless Trust
Crisis UK
Enham Trust
Guy’s and St Thomas’ Charity (which includes Evelina London)
Imago Dei Prison Ministry
Launchpad Reading
Lighthouse Construction Industry Charity
Missing People
National Autistic Society
New Hope, Watford
North London Cares
Refugee Support Europe
Reigate and Banstead Womens Aid
Restore Hope
Small Charities Coalition
Solace Women’s Aid
Support Staffordshire
Thames Reach
Thames Valley Air Ambulance
The Benjamin Foundation
The Clock Tower Sanctuary
The Connection at St Martin’s
The Ehlers-Danlos Support UK
The Fire Fighters Charity
The Waterside Centre, Kings Langley
Warming up the Homeless
WAY Widowed and Young
Women’s Aid Federation of England

Our Charity Partners

Search from over 400 charities you can fundraise for