
Chiltern 50
Ultra Challenge®
Sat 23 Sept 2023
- Registration Open
- Henley Basecamp
- 50 km Loop & 25 km & 10K
- Camping Packages
- Transfers
End of season 50 km looped challenge in some of the Chilterns finest countryside, with historic trails, rolling hills, nature reserves, and fantastic views. At our basecamp in Henley, there’s a Saturday night celebration BBQ, bar & entertainment, with extensive on-site camping & parking options. A route with real variety and some wonderful scenery – and easily accessible from London. You’ll get full support & hospitality, and with three ~25 km options and a 10K loop also available, there’s a Chiltern Ultra Challenge for everyone!












The Ultra Challenge Experience

Good preparation & smart planning are key to successfully completing an Ultra Challenge. From the moment you sign up you’ll have access to our Challenge App, with training guides, optional training walks & runs, maps, on the day info, and online forums. We will also keep you updated with any news & challenge updates via notifications through the app and emails.
Keeping you well fed & hydrated is key to getting you across that finish line successfully & safely. Whichever distance you are signed up every meal and snack stop is included in your entry so you can expect:
- Regular snack stops every 12.5 km
- Main meal/every 25 km
- Hot drinks, water & energy drinks at all stops
- We cater for every dietary requirement
- Menus published before the Challenge
We have Rest Stops every 12.5 km or so with ‘major’ ones at ~25/50/75/100 km. Our Rest Stops are like no others – along side a large medical area and catering services they are all covered infrastructure (to keep you out of the sun or rain!) – here there will be a place to sit down and put your feet up, use any of the facilities (toilets, medics, changing rooms, rest areas, baggage pick up). Manned by our team to help with any query or questions you have!
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. There’s also the option to hire a ‘GEO TRACKER’ – so they can follow you in real time every step of the way – day & night!
For those taking on the Full Challenge (~100 km) across 2 days we have on every event a ‘Base Camp’ set up where you can either book one of our all inclusive camping packages or ‘pitch your own’. Our camp sites have hot showers, drinks stations, chill out areas and are a great way to get some shut eye over the Saturday night, before taking on the 2nd day of your challenge!
Keeping you safe and healthy is our upmost priority – we have a vast experienced team of Doctors, Paramedics, First Aiders, Podiatrists and Masseuses available and on hand at every Rest Stop (as well as roaming the route). You will also have access to a ‘self help’ area at every stop with blister plasters, talcum powder & more should you just need tape yourself up!
We don’t ever want you to forget that moment you reached your goal and crossed over the finish line – our Cheer Squad will ensure that you don’t! You will be given a medal, finisher’s t-shirt, glass of fizz and a photo finish! Before being guided to a hot meal drinks & a well earned sit down and rest.
We operate shuttles to and from the nearest train station for anyone needing onward travel after their challenge, the majority of our finish lines also have ample parking so your supporters can meet you and pick you up, as well as we will have specific ‘transfers’ back to other locations – check the individual event pages for full details of the services we will be laying on.
Date: Sat 23 Sept 2023
Start & Finish: Henley Showground
Distance & Elevation: 50 km & 920 m elevation
Date: Sat 23 Sept 2023
Start & Finish: Henley Showground
Distance & Elevation: 25 km & 500 m elevation
Date: Sat 23 Sept 2023
Start: Henley Showground
Finish: Lewknor
Distance & Elevation: 23 km & 400 m elevation
Date: Sat 23 Sept 2023
Start: Lewknor
Finish: Henley Showground
Distance & Elevation: 27 km & 500 m elevation
10 km Chiltern loop
Henley (basecamp) > Henley (basecamp)
- Saturday 23 September 2023
- Startline – Henley (basecamp)
- 10km & ~ 235 m elevation
- Finish line – Henley (basecamp)
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 Ultra 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
SUMMER DEAL
SAVE ££'s
£10 OFF 100km, £7.50 OFF 50km, OR £5 OFF 25km CHALLENGE
applies to all funding types
*Conditions apply & ends 3 July '23
How to Join
Self Funding
for You
Pay for your place in full. No fundraising required. (Only option for Chiltern 10K)
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.
Best Value 'MULTI DEALS' for 2 events or more. Save up to 30%!
Our Charity Partners
We work with a wide range of fantastic charities, which benefit from the annual £7+ million of Ultra Challenge fundraising. Our Series Partners and Challenge Partners are some of the UK’s major national & regional charities. Choose to fundraise for one of these ‘Official Partners’ – and it’s 50% OFF the normal charity sponsorship Reg Fees. We also have 50 or so ‘Associate Partners’ (with 25% OFF normal charity Reg Fees) AND 300+ other ‘listed’ charities involved that you can choose to support.

OFFICIAL PARTNERS
50% ofF charity sponsorship REG FEE
SERIES PARTNERS
CHALLENGE PARTNERS

OTHER PARTNERS
25% ofF charity sponsorship REG FEE
ASSOCIATE PARTNERS
OTHER CHALLENGE PARTNERS

or fundraise for over 300+ others

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!

14 Amazing Challenges
125,000 or so adventurers have taken on an Ultra Challenge® so far, and the 14 unique events make up the UK’s biggest & best series of treks & trail runs – which have also raised over £40 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 on an unforgettable inspirational event.


Lake District Ultra Challenge
10-11 June 2023
100 km loop + Half & Quarter Challenge options & Ambleside 10K
1 of 13
Isle of Wight Ultra Challenge
5-6 May 2024
106 km ‘Full Island’ Loop + Half & Quarter Island options.
2 of 13
London 2 Brighton Ultra Challenge
27-28 May 2023
100 km + Half & Quarter Challenge options
3 of 13
South Coast Ultra Challenge
2-3 Sept 2023
100 km + Half & Quarter Challenge options
4 of 13
Jurassic Coast Ultra Challenge
18-19 May 2024
100 km + Half & Quarter Challenge options AND Marathon + Double Marathon & Bridport 10K
5 of 13
Thames Path Ultra Challenge
9 – 10 Sept 2023
100 km + Half & Quarter Challenge options
+ Thames Bridges 25km Trek
+ Friday Moonlight 10K Walk
+ The Henley 10K
6 of 13
South West Coast 50 Ultra Challenge
5 August 2023
50 km Loop + 25 km & 10 km Challenge options
7 of 13
Peak District Ultra Challenge
8-9 July 2023
100 km Loop + Half & Quarter Challenge options & Bakewell 10 Mile.
8 of 13
Cotswold Way Ultra Challenge
24 – 25 June 2023
100 km + Half & Quarter Challenge options.
9 of 13
Chiltern 50 Ultra Challenge
24 Sept 2022
50 km Loop + 25 km & 10K Challenge options
10 of 13
North Downs 50 Ultra Challenge
22 July 2023
50 km Loop + 25 km & 10km Challenge options.
11 of 13
Easter 50 Ultra Challenge
Sat 6 April 2024
50 km 0r 25 km Loops
12 of 13
London Summer Walk
Sat 26 August 2023
25 KM looped route – Woolwich Start / Finish
13 of 13