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Chiltern 50 Challenge 2021

There are 3 sign up options, and you can join as an Individual or as a Team. The steps you need to follow are set out below…

How to Join

Sign up via our online form, and pay the appropriate Registration Fee. You'll receive a confirmation email with important details and access to your Challenge App, with the resources to help you prepare. If you choose one of the fundraising options we'll confirm that with the charity you've selected, and they will be in contact to welcome you within 7 - 10 days.

Choose how you want to join the Challenge – register via that option and its associated online form. Then enter your personal details.


  • Option 1 – Self Funding 
  • Option 2 – Charity Sponsorship
  • Option 3 – Mixed Funding

Confirm the distance you wish to take on. You’ll need to chose an hourly start time window (actual start times are confirmed 4 weeks prior to the event).

Everyone needs to register as we require personal details & declarations, but within the form you can choose to ‘Create’ or ‘Join’ a Team. Teams can be of any size – members can opt for the same or different funding options, charities, or distances.


  • Create a team – you become the Team Captain. You need a Team Name, and a Password for others to join. Then invite members to join you!
  • Others then join the Team as they register, by searching for the Team Name and using the Password

If you’re fundraising you’ll confirm which charity you’re supporting via a drop down menu. Be careful to pick the correct one. Your confirmation email details how to set up an online JustGiving page for sponsorship donations.


If you’re a Team of 4 or more, with all on the ‘Sponsorship For Charity’ Option for the same charity & the same distance – there’s an ‘Exclusive Charity Team‘ deal with lower reg fees & targets.

All sponsorship goes direct to the Charity via your online JustGiving page. At least 50% of the sponsorship target should be with the Charity by 3 weeks prior to the Challenge. At this time the Charity pays a Fee for your place to the Organiser (similar to the Self Funding cost – or half of it for Mixed Funding as you’ve already covered half). Failure to meet the deadline may result in cancellation by your charity. The remaining 50%, and any extra, should be with your Charity by 4 weeks after the Challenge.

Best value, if you’re up for a few challenges, is always our ‘Multi Deals‘ – including the Tri-Challenge option if you want to step up the distance over 3 events, finishing your season with a full 100 km!

Costs & Fundraising

Select your option from the list below to start the sign up process.

Option 1



50km Challenge

£129 fee paid online as &
no fundraising commitment.

25km Challenge

£79 fee paid online
& no fundraising commitment.

Option 2



50km Challenge

£10 reg fee & at least
£395 charity sponsorship

25km Challenge

£5 reg fee & at least
£245 charity sponsorship

Option 3



50km Challenge

£64.50 reg fee & at least
£199 charity sponsorship

25km Challenge

£39.50 reg fee & at least
£119 charity sponsorship

Choose your Charity

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

Looking to do more than 1 Event?


Our ‘Multi Deals’ will always offer the best value & the highest Self Funding discounts available. Chec:

The ‘Tri-Challenge’ enables you to step up the distance across 2021. Take on a 25 km Challenge first, then a 50 km half on a different Event, and finish your season with an unforgettable Full 100 km Challenge!


Most frequent questions and answers

You will receive a receipt via email, along with a Confirmation Email welcoming you onto the challenge detailing any next steps and timelines you need to be aware of, and letting you know where to find all the information you will need for your challenge. If you don’t receive this within 24 hours, please check your spam/junk mail folders.

Yes you must be 18 or over on the day of the challenge if taking on a Full Challenge, 16+ & accompanied by an adult if taking on a Half Challenge, 14+ & accompanied by an adult if taking on a Quarter Challenge.


Under 18s taking part cannot sign themselves up – they must be signed up by someone over 18.

No – however we have a great New Year deal on which will give you a great saving!

  • Yes you can sign up others, but not in the same transaction – you will need to go through the registration questions & payment per person.
  • When signing up on behalf of others, please ensure that the YOUR INFORMATION section is always filled with YOUR information as the account holder (regardless of whether you are personally taking part or not).
  • The next section (PARTICIPANT INFO) asks ‘Who is this registration for?’ and you can then select ‘Someone Else’ and proceed with their details.
  • Where possible, please avoid using the same email address for more than one person.

In the TEAM INFO section (towards the end of the registration questions), you will be asked if you would like to ‘Join a team’ or ‘Create a team’.


If selecting to create a team, you will be asked to create a Team Name and Password. Subsequent team members to register can then select to join a team, and will be asked to provide these details in order to join it.

We ensure that registered teams are assigned the same start wave (where distance/challenge option allows), and your team name will be printed onto your bib.  

There are no restrictions on our regular Flexi-teams – you can be any mixture of charities / distances / funding types (i.e. Self Funding, Charity Sponsorship or Mixed Funding), and can have any number of members (even 1!).


‘Our Charity Team’ is special registration option and is restricted; if you sign up on this option your team must have at least 4 members, all fundraising same charity (and this must be one of our official Series ‘Partners’).

Yes – as long as you are fundraising for the same charity, you can create a team fundraising page on Just Giving (we recommend letting your charity know this is how you will be fundraising together). However, please be advised that the minimum fundraising targets remain per person (not per team), so you will need to reach the combined total fundraising amount on your page for your group. 

If there is a charity you would like to fundraise for that does not appear on our list, we ask that you speak with your preferred Charity about what you would like to, and ask them to register with us via our short contact form which can be found on our website page


Once they’ve registered with us, it will take about 5-7 working days to add them onto our registration forms, and you can then sign up to your chosen challenge in aid of them.


Alternatively you can raise for one of the 500+ charities we are currently already working with, or you can Self Fund your place and raise for them on the side with no commitment. 


Please note: the above is relevant for Charity Sponsorship or Mixed Funding places only. If you are entering as a Self Funder you can fundraise for any charity of your choice (only if you want to) & we do not need to be informed

If you are entering on a Charity Sponsorship or Mixed Funding place then NO – you must select one prime charity for your fundraising. This is because your charity will be paying for a portion of your place on the event (out of the fundraising you generate). If you wish to also fundraise for another charity, you can do so on your own terms but only as long as you reach the minimum target your first/prime charity.


If you join as a Self Funder however, you have complete flexibility on who you fundraise for – with no targets or deadlines, and no cost to those charities.

If you have chosen to fundraise for a charity (from our list), we will pass your details over to them and you can expect to hear from them with a welcome pack within 14 days. If for some reason you do not hear from your charity after this time, please contact them directly.

If we have to cancel your Ultra Challenge due to Covid-19 (such as there is a national lockdown) you will be offered to either transfer your place across to another Ultra Challenge in 2021 or 2022, or receive a full refund for the monies you’ve paid. 

If you have to cancel for any reason, than standard Ts & Cs apply.

All 500+ Charities you can fundraise for

Animal Rescue Cambodia

Bath Cats and Dogs Home

Battersea Dogs & Cats Home

Birmingham Dogs Home

Cats Protection

Compassion in World Farming

DBARC (The Diana Primblecombe Animal Rescue Centre)

Dogs For Good

Dogs Trust

Explorers Against Extinction

Foal Farm Animal Rescue (Friends of Animals League)

Hampshire & Isle of Wight Wildlife Trust

International Animal Rescue

Marine Conservation Society

Rare & Endangered Species Trust


Senior Staffy Club

Support Dogs

Sussex Wildlife Trust

The CATS Foundation

The Humanimal Trust

The Sheffield Cats Shelter


Tiggywinkles, The Wildlife Hospital Trust

Veterans for Wildlife


WECare Worldwide

Whale and Dolphin Conservation

Wood Green, The Animals Charity

World Land Trust

Action Bladder Cancer UK

Against Breast Cancer

Blood Cancer

Bone Cancer Research Trust

Brain Tumour Research


Children’s Cancer and Leukaemia Group


Cure Leukaemia

Cyclists Fighting Cancer

Dragonfly Cancer Trust

Exeter Leukaemia Fund

FORCE Cancer Challenge

Genesis Research Trust

Helen Rollason Cancer Charity

It’s Good2 Give

Jo’s Cervical Cancer Trust

Kidney Cancer Support Network

Kidney Cancer UK

Lasting Memories Cancer Trust

LATCH Welsh Children’s Cancer Charity


Lennox children’s cancer fund

Lingen Davies Cancer Fund

Look Good Feel Better

Lymphoma Action

Maggie’s Cancer Care

Melanoma Fund

Mesothelioma UK CIO

Mummy’s Star”

Myeloma UK

Neuroendocrine Cancer UK

OcuMel UK

Odyssey Project Ltd

Oracle Cancer Trust

Orchid Cancer Appeal


Ovarian Cancer Action

Pancreatic Cancer Action

Pancreatic Cancer Research Fund

Penny Brohn UK

Petal – The Christine Woodberry Memorial Trust

Prostate Cancer Research

Rosemere Cancer Foundation

Roy Castle Lung Cancer Foundation

Sarcoma UK


Shine Cancer Support

Skeletal Cancer Trust (SCT)

Solving Kids’ Cancer

Team Lewis Trust

Team Verrico

Teens Unite Fighting Cancer

The Christie Charity

The Errol McKellar Foundation

The Eve Appeal

The Indee Rose Trust

The Institute of Cancer Research

The Joshua Wilson Brain Tumour Charity

The Royal Marsden Cancer Charity

The Urology Foundation

The Wight Brainy Bunch

Topic of Cancer

Tuberous Sclerosis Association (TSA)

Wessex Cancer Trust

Willow Foundation

Wolo Foundation


Able Child Africa


Action Cerebral Palsy

Action for Children

ADAPT Prembabies Limited

Adoption UK

Alder Hey Children’s Charity

Andover and District Mencap

Association of Pakistani Physicians and Surgeons of UK Foundation

A-T Society

Autism Inclusive

Babies in Buscot Support



BOSP – Brighter Opportunities for Special People

Bright Horizons Foundation for Children

Cardiac Risk in the Young


Caudwell Children



Child Bereavement UK

Childhood First

Children on the Edge

CHUMS Charity

City YMCA, London

Cochlear Implanted Children’s Support Group



Daisy’s Dream

Diverse Abilities

Doing it for Dan


Dreams and Wishes

Dreams Come True

Dylan’s Quest

Empire Fighting Chance


First Days Children’s Charity

Fondation Sarah Grond

Forward Facing

Friends of Burford School

Friends of Chiltern Wood School

Friends of Grovelands School

Go Beyond

Heartline Families

Hope and Homes for Children

Hypo Hounds



James Hopkins Trust

Jamie’s Farm

John Thornton Young Achievers Foundation

Jubilee House Trust



Kate’s Adventure Fund


Kingdom Kids

Leeds Weekend Care Association

Little Heroes

Little Lives UK

Make it Shine SEN Project

Me2 Club


Momentum Children’s Charity

Mosaic-Supporting Bereaved Children

MYTIME Young Carers

National Association for Children of Alcoholics (Nacoa)

National Deaf Children’s Society

Nepal Youth Foundation UK

Newlife The Charity For Disabled Children

Oakley Pre-school Group


OSCAR’s Paediatric Brain Tumour Charity

PC Nicola Hughes Memorial Fund


Positive About Down Syndrome

Prior’s Court Foundation

Railway Children

Rainbow Trust Children’s Charity

Rainbows Hospice for Children and Young People

Raise Your Hands

Rays of Sunshine

Red Eagle Foundation

Ripples Of Compassion

Rockinghorse Children’s Charity

Ronald McDonald House Charities

Sam’s Rainbow Foundation

Santa Maria Foundation

Sparklers Foundation


Square Peg Activities Limited

St Mary’s Nursery School

St. James’s Place Charitable Foundation

Starlight Children’s Foundation

Street Action

Superhero Foundation

Taylor Made Dreams

The Brompton Fountain

The Childhood Trust

The Children’s Hospital Charity

The Children’s Trust

The Compassionate Friends

The Elizabeth Foundation

The Ellie Thornton Foundation

The Friends of Alfie Johnson

The Grand Appeal

The Human Milk Foundation

The International Future Foundation

The Julius Little Foundation

The Let’s Play Project

The Mudlarks Community

The Ruth Strauss Foundation

The Sarah Groves Foundation

Tiny Tickers


Together for Short Lives


Twins Trust

Ty Hafan

Unicef UK

War Child UK

We Are Beams


Winston’s Wish

Above & Beyond

Addenbrooke’s Charitable Trust

Awyr Las /Blue Sky, the North Wales NHS Charity

Birmingham Children’s Hospital Charity

Birmingham Women’s Hospital Charity

Brighter Futures

Countess of Brecknock Hospice Trust

First Touch

Friends of PICU

Get Well Gamers

Held In Our Hearts

King George & Queen’s Hospitals Charity

King’s College Hospital Charity

Leeds Cares

Little Roo Neonatal Fund

Maidstone and Tunbridge Wells NHS Charitable Fund

Manchester Foundation Trust Charity

Oxford Health Charity

Oxford Hospitals Charity

Poole Hospital Charity

Royal Brompton & Harefield Hospitals Charity

Royal Manchester Children’s Hospital Charity

Southampton Hospital Charity

Spread a Smile

The Forever Friends Appeal

The Mater Foundation

Valley Hospital Charity

Acorns Children’s Hospice

Arthur Rank Hospice Charity

Ashgate Hospicecare

Chestnut Tree House Children’s Hospice

Children’s Hospice South West

Compton Care

Countess Mountbatten Hospice

Cynthia Spencer Hospice

Dorothy House Hospice Care

Douglas Macmillan Hospice

East Anglia’s Children’s Hospices

East Cheshire Hospice


Farleigh Hospice

Forest Holme Hospice Charity

Greenwich & Bexley Community Hospice

Haven House Children’s Hospice

Havens Hospices

Heart of Kent Hospice

Hospice in the Weald

Hospice of the Good Shepherd

Hospice UK


Isabel Hospice

John Eastwood Hospice Trust

John Taylor Hospice

Julia’s House

Keech Hospice Care

Kirkwood Hospice

Martlets Hospice

Michael Sobell Hospice

Naomi House Children’s Hospice

North Devon Hospice

Pembridge Hospice Charity

Phyllis Tuckwell Hospice Care

Pilgrims Hospices

Primrose Hospice

Primrose Hospice

Prospect Hospice

Rennie Grove Hospice Care

Richard House Children’s Hospice

Rowans Hospice

Salisbury Hospice Charity

Skanda Vale Hospice

Sobell House Hospice Charity

St Andrew’s Hospice (Lanarkshire)

St Barnabas House

St Catherine’s Hospice

St Christopher’s Hospice

St Elizabeth Hospice

St Helena Hospice

St John’s Hospice

St Luke’s Hospice (Basildon & Thurrock)

St Luke’s Hospice (Harrow and Brent)

St Margarets Hospice

St Michael’s Hospice (Hastings and Rother)

St Michael’s Hospice (North Hampshire)

St Nicholas Hospice Care

St Peter & St James Hospice

St Peter’s Hospice

St Raphael’s Hospice

St Richard’s Hospice, Worcester

St Wilfrid’s Hospice

Thames Hospice

The Friends of the Wisdom Hospice

The Myton Hospices

The Prince of Wales Hospice

Trinity Hospice

Wakefield Hospice

Weldmar Hospicecare

Willen Hospice

Woking & Sam Beare Hospices

Zoë’s Place Baby Hospice

Action Duchenne

Action for A-T

Action for M.E.

Action for Pulmonary Fibrosis

Action Medical Research

Air Ambulance – Kent Surrey Sussex

Alex, The Leukodystrophy Charity (TLC)

Allergy UK

Alzheimer Scotland

Ambitious about Autism



Angels Support Group Hitchin


Archie’s Army

Asthma UK

Ataxia UK

Autism Forward

Back Up Trust


Behçet’s UK

Berkshire Vision

Beyond Autism

Blue Skies Hospitals Fund

Brighton and Sussex University Hospitals Charity

British Acoustic Neuroma Association

British Liver Trust

British Lung Foundation

British Skin Foundation

Burning Nights CRPS Support

Cardiff & Vale Health Charity

Cardiomyopathy UK

Caring Matters Now

Caudwell LymeCo

Cavell Nurses’ Trust

Centre for ADHD & Autism Support

Charley Paige Trust

Children’s Liver Disease Foundation

Cianna’s Smile

CICRA better lives for children with crohns and colitis


Cleft Lip and Palate Association

Confederation of Meningitis Organisations

Crohn’s And Colitis Concern UK

Darby Rimmer MND foundation

Deafblind UK


Dementia UK

Devon Air Ambulance Trust

Devon Freewheelers

Different Strokes


DT38 Foundation – Dylan Tombides Foundation

Duchenne UK

Edinburgh Headway Group

Encephalitis Society

Epilepsy Action

Epilepsy Research UK

Fight for Sight

Focus Birmingham

Genetic Alliance UK (SWAN UK and Rare Disease UK)

Group B Strep Support

Guillain-Barré & Associated Inflammatory Neuropathies (GAIN)

Guts UK

Guts UK Charity

Hampshire and Isle of Wight Air Ambulance

Hampshire Medical Fund

Headway Portsmouth and south east Hampshire


Hearing Dogs for Deaf People


Huntington’s Disease Association

Ichthyosis Support Group

Imperial Health Charity


Kent Association for the Blind

Kent MS Therapy Centre

Kidney Research UK


Lilian Faithfull Care

London’s Air Ambulance


Magpas Air Ambulance

ManKind Initiative

Medical Research Foundation


Meningitis Now

Midlands Air Ambulance Charity

Moorfields Eye Charity

Motor Neurone Disease Association

MS Trust

Multiple System Atrophy Trust

Muscular Dystrophy UK

Myotubular Trust

NASS – National Ankylosing Spondylitis Society

National Kidney Federation

National Rheumatoid Arthritis Society

National Tremor Foundation

Nephrotic Syndrome Trust (NeST)


Northamptonshire Health Charity

Nystagmus Network

Operation Smile UK

Overcoming MS

PAPYRUS Prevention of Young Suicide

PKD Charity


Positive East

Prader-Willi Syndrome Association UK

PSP Association

RASASC Guildford

Retina UK

Reverse Rett


RNOH Charity

Rock 2 Recovery

Royal Hospital for Neuro-disability

Royal Osteoporosis Society

Salus Fatigue Foundation

Sands, Stillbirth & Neonatal Death Charity


Scleroderma and Raynaud’s UK

Scoliosis Campaign Fund

Scoliosis Campaign Fund

Shetland Kidney Patients Association

Shine – Spina Bifida. Hydrocephalus. Information. Networking. Equality.




Somerset Unit for Radiotherapy Equipment (SURE)

Spinal Research


St George’s Hospital Charity

St Mark’s Hospital Foundation

Stroke Association

SUDEP Action

Support 4 Sunflowers

Sussex Community NHS Charity

Terrence Higgins Trust

The Brain & Spine Foundation

The Chiltern Centre

The Cure Parkinson’s Trust

The Dinosaur Trust

The Ectopic Pregnancy Trust

The Felix Project

The Haemophilia Society

The Human Milk Foundation

The Kaleidoscope Plus Group

The Lewy Body Society

The Lily Foundation

The Lullaby Trust

The Maddi Foundation

The Maypole Project

The ME Association

The Migraine Trust

The National Brain Appeal

The Northam Care Trust

The Robert Jones & Agnes Hunt Hospital

The Sickle Cell Society

The Sussex Beacon

The Victoria Foundation


Throat Cancer Foundation

Thrombosis UK

Thyroid UK

Treacher Collins Family Support Group

UK Infantile Spasms Trust

UK Sepsis Trust

Vascultis UK

Versus Arthritis

Vision Foundation

Walk the Walk

Action on Addiction

Aston Villa Foundation



Buckinghamshire Mind

Cheltenham Open Door

Combat Stress


Cruse Bereavement Care

Dartmoor Centre for Counselling and Psychotherapy

Dementia Forward

Devon Partnership NHS Trust Special Charity

Dorset Mind

Dyspraxia Foundation

East London Cares


Get Fit 4 Mental Wellness

Give A Ruck

Gloucestershire Counselling Service

Grief Encounter

Guernsey Mind


Help Counselling

Helping Young Minds

Herts Inclusive Theatre

KIM Inspire

Lighthouse Construction Industry Charity

Lincolnshire Rural Support Network


Liverpool Cares

Manchester Cares

Mental Health Foundation

Mental Health Research UK

Mental Health UK

Mind in Brent, Wandsworth and Westminster

Mind in Somerset

Mind in West Essex

Music for my Mind


OCD Action


Sirona Therapeutic Horsemanship

Solent Mind

South East and Central Essex Mind

South Lakes Citizens Advice

Sport In Mind

Suicide Prevention Bristol


The Deborah Ubee Trust

The Lighthouse For Perth

Time To Talk Mental Health UK

Woking Mind


ABF The Soldiers’ Charity

Blesma, The Limbless Veterans

Felix Fund

Historic Army Aircraft Flight Trust

RAF Benevolent Fund

RMA – The Royal Marines Charity

Royal Air Forces Association

Royal Navy and Royal Marines Charity

Scotty’s Little Soldiers

SSAFA, the Armed Forces charity

Stoll (The Sir Oswald Stoll Foundation)

Veterans Aid

ActionAid UK

British Red Cross


CoCo’s Foundation

Consortium for Street Children


Farm Africa

FutureSense Foundation

Legacy of War Foundation

Link Age Southwark

Mark Evison Foundation

Medecins Sans Frontieres UK

Mehiel Foundation

MicroLoan Foundation

Muntada Aid

New Futures Nepal

Quicken Trust

Refugee Action

Release International


Shamida Ethiopia



The Adventure Boutique Foundation

The Climate Change Organisation, trading as The Climate Group

The Favela Foundation

The Hummingbird Refugee Project

The Hunger Project UK

The Mission to Seafarers

Village Africa



World Merit


Access Sport CIO

Adur Special Needs Project

Age Exchange

Ascend: Leadership Through Athletics

Asha for Education

Bessemer Grange PTA

Blueprint for All

Bright Ideas for Tennis

Coach Core Foundation

Dartmoor Search and Rescue (Ashburton)


Education Support Partnership

Exeter Royal Academy for Deaf Education

Friends Of Shenstone

Garden House Hospice Care

Girlguiding North West England

Headway Swindon

Horatio’s Garden

INTO Giving


Mines Advisory Group

National Literacy Trust

Orchard Preschool & Playgroup

SEED Malawi

Student Minds

Sussex Cricket Foundation

Teach First

The AHOY Centre Charity

The Change Foundation

The Great Generation

The Prince’s Trust

The Talent Tap



YHA (England and Wales)

Youth Adventure Trust


Access Adventures

Age UK Cornwall & The Isles of Scilly

Age UK Lambeth

Age UK Medway

Alabare Christian Care & Support

Amnesty International UK

Ben – Motor & Allied Trades Benevolent Fund

Bournemouth Foodbank

Brake, the road safety charity

Care of Police Survivors (COPS)

Central London Samaritans

Centre for Women’s Justice


CPRE – The Countryside Charity

Crisis UK

Dream-A-Way CIO

East & North Hertfordshire Hospitals’ Charity

East Teignbridge/Dawlish Community Transport

Enham Trust

Essex & Herts Air Ambulance

Family Fund

Fertility Network UK


Fulham Reach Boat Club


Go Dharmic Welfare UK

Guide Dogs for the Blind

Guy’s and St Thomas’ Charity (which includes Evelina London)

Heartfulness uk

Hestia Housing and Support

Hope Nottingham CIO

Imago Dei Prison Ministry

Launchpad Reading


National Autistic Society

National Trust

New Hope, Watford

North London Cares

Pamoja Leo

Plan Zheroes

Red Balloon Foundation


Refugee Support Europe

Reigate and Banstead Womens Aid

Restore Hope



Sailor’s Society



Solace Women’s Aid

South London Cares


St John Ambulance

Standing Voice

Support Staffordshire


Thames Valley Air Ambulance

The Anthony Knights Foundation

The Benjamin Foundation

The Big Issue Foundation

The Brick

The Brick ( Queens Halls Action on Poverty)

The Early Birth Association

The Ehlers-Danlos Support UK

The Fire Fighters Charity

The Running Charity

The Silver Line

The Trussell Trust

The Waterside Centre, Kings Langley

TRIBE Freedom Foundation

Turning Tides

Warming up the Homeless

WAY Widowed and Young

Woking Lions

Women’s Aid Federation of England

Your Sanctuary

Our Charity Partners

Search from over 400 charities you can fundraise for