- Sat 26 Sep 2026
10:00
Age 8 & over
£49
- 10 km trail running + 235 m ascent
Event overview
Thousands of runners and walkers have taken part in the The Chiltern 50 Ultra Challenge - part of the UK’s biggest and best series of treks and trail runs for a wide range of ages, fitness and experience levels which raises £10+ million a year for charities!
You’ll get a fully signed route with arrows, free snacks and drinks, a t-shirt, medal and glass of fizz to make your active fundraising challenge successful and rewarding! If you’re up for a 10K charity challenge this year, make it The Chiltern 10K!
The Chiltern 10K Experience
The Chiltern 10K is fun, safe, and rewarding and you can take it on at your pace as an individual, or as a team of friends or family. It's ideal as a charity fundraiser and children are welcome too. You’ll get full support, there’s a discounted finishers meal – and you’ll enjoy a great day out!
Get Sponsored for Charity
You’ll be amazed how much you can raise as friends and family will recognise and support your courageous endeavours! All fundraising goes directly to your charity via an online JustGiving page.
£10+ Million Fundraising
This 10K is part of a series which raises £10+ million a year for charities. Choose your charity, set up a JustGiving sponsorship page and make your miles count!
Prefer to enter directly? General entry options are explained on the The Chiltern 10K page.
Event photos
Event video
Charity places
The charities below have places in the event. To secure your charity place, simply find a charity then book a charity place or join a charity team with your own place.
.jpg "Cats Protection logo"){kind=logo}
- Average fitness
- Beginner-friendly
- Event village
- Families
- Traders at event
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 runner after ITRA points, there’s an Ultra Challenge® for you! Walk, Jog, or Run your chosen challenge – as an Individual or a Team, for a charity of your choice or just for you.
On the Full challenges, there’s a new Ultra Trailblazerz® option for ‘rapid runners’, and an Ultra March® option for ‘hasty hikers’, plus a friendly ‘Solo Challenger’ start time to join up with others.’
The Chiltern 50 Ultra Challenge® is fun, safe, and rewarding, with full support all the way, enabling you to push yourself further in stunning scenery. With camping options, parking and shuttle bus transfers, it will be a fantastic weekend in the Chilterns!
Best support & hospitality
This Ultra Challenge® famously lays on the best support and hospitality available on any UK endurance-style event. This enables you to step up and confidently tackle an 'Ultra' distance, with the best chance of success - and to enjoy your challenge!
- 1 lap
- First aid
- Marshals
- Mass start
- Undulating
- Way markers
Overview
A beautiful 10km looped route from the basecamp at Henley Showground. The route explores public footpaths and wonderful woodlands within the Culden Faw estate.
Map
At the finish
- Glass of fizz, medal and t-shirt
- Bag transfer
- Bar
- BBQ
- Cafe
- Camping
- Music
- Paid parking
- Rural
- Secure bag storage
- Showers
- Toilets
- Urban
Event HQ
Henley Showground
Marlow Road
Henley-on-Thames
Buckinghamshire
RG9 3AS
UK
- Fundraising materials
- Fundraising support
How to start fundraising
You need to create your fundraising page on JustGiving within 48 hours of registering for your challenge. Then you can start your fundraising by sharing your page online with your friends and family.
Fundraise as a team
As long as you’re all fundraising for the same charity, you can create a team fundraising page on JustGiving. You will still have to reach the combined total fundraising amount as the target is per person, not per team.
Fundraising concerns
Speak to your charity about any worries. They are the experts and will offer you support, materials and inspiration throughout.
Remember only 50% of the target has to be reached 3 weeks before the challenge meaning you’ve got time after the challenge to impress everyone with your achievement and keep on fundraising.
Help for you
If you don’t reach the fundraising target, there are alternative options. You can always change to a self-funded place and still take part in the challenge.
Next steps
Once you've got your charity place, your details will be passed to the charity and you will hear from them within 14 days.
The support and friendliness of the staff and volunteers everywhere has been amazing - obviously all rest stops and walking through the finish line. Also the night-time route signage with the glow sticks was AMAZING!!
I love the level of support from everyone. There’s a great atmosphere and that’s part of why I love doing these challenges. My friend now loves them too!
- Camping
- Drinks
- Event app
- Fizz at the finish
- Map
- Massage
- Medal
- Post-race meal
- Snacks
- T-shirt
Before
- Challenge app
- Facebook forum
- Training guides
- Fundraising support
- Training walks and runs
- Video briefings
- Travel planning
- Parking
During
- Baggage transfers
- The start line
- Timing and GPS tracking
- Rest stops
- Food and drink
- Medical support
- Camping
Along the route
- Fully signed route
- Apps, maps and GPS
- Route safety experts
- Emergency response
- Trek masters
- 24 hour control room
After
- Finish line experience
- Finish times and certificate
- Shuttles and transfers
- Hot meal
- Medical care and follow up
- Deals on future challenges
Bookable extras
- Finish line meal
