North Downs 50 Ultra Challenge 2027

Surrey Sports Park, Guildford, GU2 7AD.

You can download the North Downs 50 Ultra Challenge Factsheet for more detailed information.

Yes! You can access the event guide online, as well as all the information you need to know on the Ultra Challenge website.

You can see a detailed map of the route on the Ultra challenge website.

Ultra Challenges are physical events, where you can choose to walk, jog or run a distance of 10 miles, 25km or 50km. The Event Organisers welcome participants of all abilities who are confident in their ability to participate, however must ensure everyone is clear on the requirements and accessibility restrictions of the route.

While each challenge covers different terrain and landscapes, you can typically expect steep climbs and descents, the necessity to cross stiles, and uneven pathways subject to weather effects such as mud and dust.

Participants with mobility issues have completed Ultra Challenges in the past on crutches and wheelchairs, and those with sight loss can also participate with a guide.

If you have any accessibility concerns or questions you can contact Action Challenge directly to discuss requirements and they'd be happy to support you.

Full 50km Challenge: 7.00 – 9.00am (7.00am runners wave)
25km Challenge: 7:30 – 9.30am (7.30am runners wave)
10 Mile Challenge: 10.00am

Please try and arrive within 1 hour of your start time.

Limited parking is available at the main venue. Or park at Surrey Sports Park from 6am – 10pm.

There are accommodation packages available, find more information on the North Downs 50 Ultra Challenge Factsheet.

Yes! Baggage storage can be paid for on the day. Find more details on the North Downs 50 Ultra Challenge Factsheet..

Of course you can! Everyone must register individually as the event organisers require personal details and declarations. Within the form you can choose to ‘Create’ or ‘Join’ a Team.

Teams can be of any size and members can opt for the same or different funding options / distances.

• When you create a Team you become the Team Captain. You need a Team Name and a password for others to join. Then you can invite your friends and family to join you!
• Other people can join the Team as they register, by searching for the Team Name and using the password

Yes! We'd love for you and your colleagues to get involved and fundraise for Anthony Nolan.

If you're looking for a memorable event to energise and motivate your team, without the hassle and high costs of organising your own, then an Ultra Challenge is a great choice.

Ultra Challenges are perfect for getting colleagues active and bonding on a fun, accessible, safe, high quality outdoors event - ideal for a wide range of ages and athletic abilities, and perfect to boost wellbeing and loyalty. Teams can be of any size and everybody can take on a distance that suits them, at their pace!

For the 'Full Charity Sponsorship', at least 50% of your sponsorship target should be raised 3 weeks prior to the challenge.

At this time, Anthony Nolan will then agree to pay a fee for your place to the Event Organisers.

The remaining 50% of your sponsorship should be raised by 4 weeks after the challenge.

Failure to meet the deadline may result in cancellation of your place. The Anthony Nolan Events Team will be here to support you every step of the way so if you need a fundraising deadline extension then we can be flexible, just let us know!

The Event Organisers recommend that you download the app for your challenge so you can access all the guides.

Please note that it is COMPULSORY for you to bring a headtorch if you're completing the North Downs 50km challenge as it will be dark when you finish.

You must be 16+ and accompanied by an adult if taking on the 50km Challenge.

You must be 14+ and accompanied by an adult if taking on the 25km Challenge 

You must be 8+ and accompanied by an adult for the 10km Challenge.

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