kent DOWNS 50
Ultra Challenge®

SAT 12 OCTOBER 2025

The end of season Ultra Challenge®– in the ‘Garden of England’.  A basecamp near Maidstone, with parking & weekend camping options, the main 50km looped route heads anticlockwise around the Kent Downs – starting on the North Downs Way to Blue Bell Hill, around picturesque Aylesford, and following the River Medway to Mote Park at halfway for a picnic. Along the Len Valley Walk to the majestic Leeds Castle, then the North Downs Way back to the showground finish line and celebration. It’s easily accessible; you’ll get full support; and with 25km & 10km options also available, there’s a Kent Downs Ultra Challenge® waiting for you!

The Ultra Challenge® Experience

UK’s #1 Endurance Style Events for ALL Experience Levels.

Choose your Challenge, support your favourite charity – do it at your pace, and there are 17 events in the Series with distance options to suit all! The ‘famous’ Ultra Challenge support enables you to go further, whilst enjoying the great outdoors & camaraderie. There are 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! 

Push Yourself Further in 2025

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 meals, snacks & drinks are included!

  • Snacks & drink stops every 12.5 km
  • Snacks – from the healthy to treats
  • Picnic at 25 km (for 50km participants)
  • Energy drinks
  • All dietary requirements catered for
  • Lighter options for ‘runners’
  • Finishers hot meal 50 km (picnic for 25km & 10km)

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 – there’s an Ultra Challenge® you!  Walk, Jog, or Run at your pace, as an Individual or a Team, for your favourite charity. There’s an Ultra March® option for ‘fast walkers’ – and a new ‘Solo Challenger’ start time to join up with others. The Easter 50 Ultra Challenge is fun, safe, & rewarding – with full support all the way, enabling you to push yourself further in wonderful historic scenery, and enjoy a great day out.

Check out which Challenge is for you….

2025 early bird deal

FREE tech T Shirt  worth £20

+ Save up to £40 off Reg Fee*

Sign up by 31 July ’24.

T-Shirt Deal Excludes Winter Walk & 10K/mile Events.

How to Join

Sign up online & pay a Registration Fee. You’ll get a confirmation email, which includes a link’ to set up your online JustGiving sponsorship page. You’ll also get access to the ‘Challenge App’ which holds all the details about the event.

Check out the ULTRA MARCH® option if you’re a walker and want to hit a ‘fast pace’. We also have a new SOLO CHALLENGERS START TIME – if you want to meet others!

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

  • Option 1 – Sponsorship for Charity
  • Option 2 – Mixed Funding for Charity
  • Option 3 – Own Place Charity Fundraising

 

* A ‘Platform Booking Fee’ of 3% is applied to all event registrations.

Confirm the challenge distance you’ll take on (Full ~100km / 3/4 ~75km /Half ~50km / Quarter ~25km / 10km etc) and then select a provisional start time slot (actual start times are confirmed 4 weeks prior to the event, and for Teams – it will be as per the Team Captain’s choice).

The ‘ULTRA MARCH’ option is for WALKERS who want to hit a sub 24 hour pace (for 100km) or a sub 12 hour pace (for 50km) with a group of like minded challengers – all starting together with experienced ‘pace setters’. You can opt in to this format & start time on the Registration Form.

SOLO CHALLENGERS – if you’re signed up on your own, and want to meet up with others – we have a special ‘Solo Challengers Start Time‘ – which you can opt into if you wish (on the Registration Form).

Everyone has to register as we require personal details & declarations. 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 friends & family to join you!
  • Others join the Team as they register, by searching for the Team Name & using the Password
  • Team Start Time – is as per selected by the Team Captain

All sponsorship goes direct to the Charity via your online JustGiving page. At least 50% of the ‘sponsorship target’ should be with the Charity 3 weeks prior to the Challenge. At this time the Charity agrees to pay 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 of your place by your charity.

The remaining 50%, and any extra, should be with your Charity by 4 weeks after the Challenge.

 

There’s a range of optional extras designed to make the planning for, and joining, your challenge easier. Sign-up to your chosen Challenge first – and you can then book any optional extras later / separately (see below for details).

Costs & Fundraising

Select your Option below to start the sign-up process. Reg Fees are paid online & Fundraising goes to the charity via an online JustGiving sponsorship page that you’ll need to set up (look for the link within the ‘Confirmation Email’ you’ll receive).

With ‘Full Sponsorship For Charity’ (Option 1) – the Reg Fees below are 50% OFF standard fees – as you’ll be fundraising for an official SERIES CHARITY PARTNER 

Option 1

FULL SPONSORSHIP
FOR CHARITY

Pay a small Registration Fee & Fundraise for your Charity (who then pay for your place)

50km CHALLENGE

£40 Reg Fee & at least
£375 fundraising/sponsorship

25km CHALLENGE

£30 Reg Fee & at least
£275 fundraising/sponsorship

10km CHALLENGE

£20 Reg Fee & at least
£100 fundraising/sponsorship

Option 2

MIXED FUNDING
FOR CHARITY

Pay for half your place cost & fundraise less for Charity (who pay half your place cost)

50km CHALLENGE

£75 Reg Fee & at least
£225 fundraising/sponsorship

25km CHALLENGE

£50 Reg Fee & at least
£150 fundraising/sponsorship

10km CHALLENGE

£22.50 Reg Fee & at least
£70 fundraising/sponsorship

Option 3

OWN PLACE CHARITY
FUNDRAISING

Pay for your place & fundraise whatever you can (with no event place cost to them)

50km CHALLENGE

£139 Fee paid online &
fundraise whatever you can

25km CHALLENGE

£89 Fee paid online &
fundraise whatever you can

10km CHALLENGE

£39 Fee paid online &
fundraise whatever you can

Active Network logo

NOTE – Our registration system provider is Active Network – you’ll need to create an account, or log into an existing one as you register. All Reg Fees are paid online. A 3% Platform Booking Fee applies to all transactions.

OFFICIAL FUNDRAISING PARTNER

Bookable Extras

A range of optional extras designed to make the planning for, and joining, your challenge easier. Sign-up to your chosen Challenge first- and you can then book any optional extras later / separately. 

GOING LIVE OCT 24

FAQs

You must be 18 or over (on the day of the challenge) if taking on a Full Challenge (~100km) or Three Quarter Challenge (~75km); 16+ and accompanied by an adult if taking on a Half Challenge (~50km ), 14+ and accompanied by an adult if taking on a Quarter Challenge (~25km) or Marathon); for a  Half Marathon aged 12+ and accompanied by an adult; and finally 8+ & accompanied by an adult for a 10km/mile Challenge.

Under 18s taking part must be signed up by someone over 18.

You’ll receive a ‘transaction receipt’ (via email) along with a Confirmation Email welcoming you, and detailing any next steps, timelines you need to be aware of, and how & where to find all the info / details you’ll need for your Challenge. (NOTEIf you don’t receive that e mail within 12 hours, please check your spam/junk mail folders)

You can expect to hear from your charity within 14 days. If for some reason you do not hear from them – please contact them directly, and also email us at  charity@actionchallenge.com & we will follow up with the charity for you.

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 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 2).

Even if you are not fundraising for the same charity, you can still create a challenge team with us.

Whilst you are signing up and registering for your challenge – 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 can then register and select to join your team, and will need to provide the team password in order to join it.

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 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 that 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 fundraising target your first/prime charity.

If you join as ‘Own Place Charity Fundraising’ however, you have complete flexibility on who you fundraise for – with no targets or deadlines.

All sponsorship goes direct to the Charity via your online JustGiving page – WHICH YOU MUST SET UP.

At least 50% of the ‘sponsorship target’ should be with the Charity 3 weeks prior to the Challenge. At this time the Charity agrees to pay a Fee for your place to the Ultra Challenge 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 of your place by your charity.

The remaining 50%, and any extra, should be with your Charity by 4 weeks after the Challenge.

All charity sponsorship and mixed funding places close 4 weeks before each challenge, so that you have enough time to fundraise and reach your target. Self funding places close for online registration on the Tuesday before each challenge.

Visit the ‘HELP CENTRE’ on the Ultra Challenge Website:

HELP CENTRE >>

If you still need additional help or guidance – you can contact the Ultra Challenge Team at:

info@ultrachallenge.com

Tel: 0207 609 6695

 

Read the 2025 Terms & Conditions

17 Amazing Challenges

Over 200,000 adventurers have taken on an Ultra Challenge® so far, and the 17 unique events make up the UK’s biggest & best series of treks & trail runs – which have also raised £55+ million for charities. Whichever challenge you choose, you’ll get full support all the way so you can set a new goal, enjoy the British countryside, and Push Yourself Further! Whoever you are – If you’re up for a challenge, it has to be an Ultra Challenge in 2025.

Map

Lake District Ultra Challenge

7-8 June 2025

100 km loop + Half  + Marathon + Quarter Challenge options & Ambleside 10K

FULL DETAILS >

1 of 16

Isle of Wight Ultra Challenge

3-4 May 2025

106 km ‘Full Island’ Loop + Half & Quarter Island options AND  ‘Cross Island’ & Medina 10 Mile challenges.

FULL DETAILS >

2 of 16

London 2 Brighton Ultra Challenge

24-25 May 2025

100 km + Half, Marathon & Quarter Challenge distance options + Brighton 25 km Loop!

FULL DETAILS >

3 of 16

South Coast Ultra Challenge

6-7 Sept 2025

100 km + Half & Quarter Challenge options

FULL DETAILS >

4 of 16

Jurassic Coast Ultra Challenge

17-18 May 2025

100 km + Half & Quarter Challenge options AND Marathon & Bridport 10K

FULL DETAILS >

5 of 16

Thames Path Ultra Challenge

13 – 14 Sept 2025

100 km + 3/4 + Half & Quarter Challenge options & Henley 10K

+ Thames Bridges 25km Trek (Sat – Central London)

+ Friday Moonlight 10K Walk (Central London)

+ The Henley 10K (Sunday)

FULL DETAILS >

6 of 16

South West Coast 50 Ultra Challenge

2 August 2025

50 km Loop + 25 km & 10 km Challenge options

FULL DETAILS >

7 of 16

Gower Peninsula Ultra Challenge

19-20 July 2025

100 km (fig. of 8) 50 km Loops (West & East) + Marathon + 25 km & 10 km Challenge options

FULL DETAILS >

8 of 16

Peak District Ultra Challenge

28-29 June 2025

100 km (Fig. of 8) + Half (loop) & Quarter Challenge options & The Bakewell 10 Mile. 

FULL DETAILS >

9 of 16

Cotswold Way Ultra Challenge

21 – 22 June 2025

100 km + 3/4 + Half & Quarter Challenge options. + Cirencester 10K

FULL DETAILS >

10 of 16

Chiltern 50 Ultra Challenge

27 Sept 2025

50 km Loop + 25 km & 10K Challenge options

FULL DETAILS >

11 of 16

North Downs 50 Ultra Challenge

26 July 2025

50 km Loop + 25 km & 10km Challenge options.

FULL DETAILS >

12 of 16

Easter 50 Ultra Challenge

Sat 12 April 2025

Windsor

50 km, 25 km, 0r 10 km Loops from racecourse basecamp.

FULL DETAILS >

13 of 16

London Summer Walk

Sat 23 August 2025

50 km or 25 km or 10 km looped route – Woolwich Start / Finish

FULL DETAILS >

14 of 16

London Halloween Walk

Sat 25 October 2025

25 KM or 10 KM spooky looped route options. Start / finish – The Oval Cricket Ground ‘dungeon’,

FULL DETAILS >

15 of 16

NEW – Kent Downs 50 Ultra Challenge

Sat 11 October 2025

50 KM, 25 KM or 10 KM looped routes options. Start / finish – The Kent Showground nr. Maidstone.

FULL DETAILS >>

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2025 Early Bird Deal

FREE branded Tech T-shirt

(ALL Funding Options. T-shirts mailed mid-Sept)

AND - SAVE UP TO £40!

Deal Ends - 31 July '24

SELF FUND - 'DUO DEAL'

Sign up to 2 Events in 2025 – and get 10% OFF EACH. 

Do a couple of 100km challenges – SAVE ~£40! Apply for your DUO DISCOUNT CODES on ANY 2025 Sign-up Page 

FULL CHARITY SPONSORSHIP

JUST £10 TO SIGN UP – ANY CHARITY / ANY DISTANCE

Sign up to 100km and SAVE £40! 

T Shirt Deal Excludes Winter Walk & 10km / 10 mile Events
All 2024 challenges Excluded
Other Deals can't be used with Early Bird