Easter 50
Ultra Challenge®

Sat 12 April 2025

Join the Bright Horizons Team and take on a 50 km Ultra, an historic 25 km, or a sharp 10 km challenge – fundraise for the Bright Horizons Foundation for Children, and make it an active Easter! From a Windsor Racecourse basecamp 2000 adventurers will head out on looped routes through the Great Park with fantastic views of the Castle, on to Runnymede, along the Thames Path, and takes in some wonderful surrounding countryside. You’ll get full support all the way, plenty of food & drink, and a celebration finish back at basecamp. 

The Ultra Challenge® Experience

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

Choose your Challenge, support your charity – do it at your pace, and there are 20 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 a member of the Bright Horizons Team. 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.

Sign Up Now

Click the button below to sign-up. Your Registration 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).

Bright Horizons employees benefit from significantly subsidised registration fees, while friends and family of Bright Horizons (clients, suppliers, parents, carers, friends and family) receive a 5% discount on their entry fees.

Discounted rates are subject to minimum fundraising targets being achieved and are outlined below. Use the appropriate labelled button below to register.

REGISTRATION DEADLINE – 19TH MARCH ’25 AT 12:00PM

STAFF

SELF FUNDING

Pay for your place & achieve your fundraising target. Staff ONLY to sign up via this link.

50km CHALLENGE

£52.82 Fee paid online &
fundraising target £500

25km CHALLENGE

£33.82 Fee paid online &
fundraising target of £250

10km CHALLENGE

£14.82 Fee paid online &
fundraising target of £150

Friends & Family

SELF FUNDING

Pay for your place & achieve your fundraising target.

50km CHALLENGE

£132.05 Fee paid online &
fundraising target of £500

25km CHALLENGE

£84.55 Fee paid online &
fundraising target £250

10km CHALLENGE

£37.05 Fee paid online &
fundraising target £150

  1. Sign up to the challenge, using the ‘Sign Up ’ button on your chosen distance.
  2. Once you’ve completed your personal details, you will get to choose if you want to Create A New Team or Join An Existing Team as part of the registration process. 
  3. To Create A New Team – you must choose a team name, and a password – this password will be required by your fellow team members to join your team as they register. 
  4.  Once you’ve created your team, and completed your registration, your fellow team members can then sign up to the same challenge, and will need to select Join An Existing Team – entering your team name using the search bar, and the password you chose when you created the team.
  5. As a Team Captain you will receive an email notification each time someone joins your team.

  1. Sign up to the challenge, using the ‘Sign Up ’ button on your chosen distance.
  2. Once you’ve completed your personal details, you will get to choose if you want to Create A New Team or Join An Existing Team as part of the registration process. 
  3. To Join An Existing Team – search for the team you wish to join, you will need the password created by the team captain in order to join a team. 
  4. The team captain will be emailed a notification of your request to join the team, once they’ve accepted your request, you too will receive email confirmation that you are now part of the team.

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, then you can book any optional extras later / separately.

You can also claim your free parking by clicking the button and booking a permit.  

Want to join the Bright Horizons team on another event? Check out the Bright Horizons Calendar!

FAQs

You must be 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; 8+ & accompanied by an adult for a 10km/mile Challenge; and finally 4+ & accompanied by an adult for a 5kM 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. This will detail 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 will receive your e-ticket between 10 and 14 days before the challenge takes place. (NOTEIf you haven’t received your e-ticket within 7 days of the challenge, please check your spam/junk mail folders and let your designated event coordinator know)

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

18 Amazing Challenges

200,000+ adventurers have done an Ultra Challenge®, and the 18 events make up the UK’s biggest & best series of treks & trail runs – which have raised £60+ million for UK charities. Whichever challenge you choose, you’ll get full support 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®

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THE 50 km Challenge

Windsor LOOP ROUTE

12 April 2025

From Windsor the ‘figure of 8’ route follows The Thames Path with fantastic views of the riverside & surrounding countryside, passing Eton College, and old Windsor before a snacks & drink stop at Runnymede. You follow ‘The Great Walk’ towards Windsor Castle with epic views as you get close. A lunch stop back at basecamp, before the 2nd 25 km loop – with more of the Thames Path, a final rest stop at Dorney Court, then back to the Racecourse where a loud cheer & celebration await.

50 km & 320 m

  • Start: Windsor Racecourse
  • Start times: 8am – 9.30am walkers & joggers (runners will be off first at 8am)
  • Solo Challenger – start time option – join up with others.
  • Finish: Windsor Racecourse
  • Finish times: Runners 4 – 6 hrs, joggers 5 – 8 hrs, walkers 8 – 12 hrs

All rest stops have – covered seating areas, toilets, medics & manned by our event teams. 

  • 12 km – snacks, hot drinks & water
  • 25 km – picnic lunch & fizzy drinks 
  • 42 km – snacks, hot drinks & water
  • 50 km – meal, hot drinks & water
  • Finish – glass of fizz, medal & t-shirt

There’s a full range of optional parking & pre or post Challenge Shuttle bus transfer services, to make it easy to join & exit – and to provide flexible options for your planning. These include: 

  • Parking at Windsor Racecourse 
  • Shuttles to and from Slough train station (good London links) before and after your challenge

 

See ‘Bookable Extras’ for full details

For WALKERS looking to achieve a sub 12 hour total time for 50 km. There’s a dedicated start time to opt into on the Reg Form – and join in wiyj 200 or so other ‘Marchers’

25 km & 175 m

  • Start: Windsor Racecourse
  • Start times: 8.30am – 10.30am
  • Finish: Windsor Racecourse
  • Finish times: Runners 2 – 3 hrs, joggers 3 – 5 hrs, walkers 4 – 6 hrs

All rest stops have – covered seating areas, toilets, medics & manned by our event teams. 

  • 12 km – snacks, hot drinks & water
  • 25 km – picnic lunch, hot drinks & water
  • Finish – glass of fizz, medal & t-shirt

There’s a full range of optional parking & pre or post Challenge Shuttle bus transfer services, to make it easy to join & exit – and to provide flexible options for your planning. These include: 

  • Parking at Windsor Racecourse 
  • Shuttles to and from Slough train station (good London links) before and after your challenge

 

See ‘Bookable Extras’ for full details

The 25 km Challenge

Windsor Loop

12 April 2025

The 25km loop heads along the Thames Path passing Alexandra & Home Park, with a pit stop for snacks & drinks near historic Runnymede, before heading to Windsor Great Park with magnificent views of the Castle. Then back to basecamp for the finish line celebrations.

THE 10 km Challenge

Windsor Loop

12 April 2025

Perfect if you want a more leisurely start to your season – or perhaps to bring the children along and make it an active family day out! The route heads around Eton, then crosses over the river to the Windsor area – and heads west with fantastic views of the magnificent Castle before making our way back to basecamp – where a picnic lunch awaits!

10 km & 25 m

  • Start: Windsor Racecourse
  • Start times: 10:30am start for all
  • Finish: Windsor Racecourse
  • Tea / coffee / snacks at the start. 
  • Picnic lunch, hot drinks & water at finish

There’s a full range of optional parking & pre or post Challenge Shuttle bus transfer services, to make it easy to join & exit – and to provide flexible options for your planning. These include: 

  • Parking at Windsor Racecourse 
  • Shuttles to and from Slough train station (good London links) before and after your challenge

 

See ‘Bookable Extras’ for full details

optional Extras

Park your car all day at Windsor Racecourse from Saturday 7am – 10pm

Ideal for all distances & supporter vehicles. Pre-booking required.

  • Supporter Parking Pass – so friends / family can park/pick up/ drop off up to 2hrs at some ‘key’ venues along the route. 

Shuttle busses to help with your logistics:

  • Transfer to main start venues from Slough Station
  • This shuttle service will be running between 7am – 10am (hourly) on Saturday morning. Pre-booking required.

After your challenge:

  • Transfers from your finish to Slough Station
  • Transfers back to your start venue (where you may have initially parked your car)
  •  Service operates between the hours of: Saturday 12pm (Midday) – 11pm. There may be a wait at quiet times – max 45 mins.

Pre book your Saturday morning breakfast. Breakfast will be available between 7am – 10am

Ideal for all challengers.

NO NEED TO PRE BOOK – AND IS AVAILABLE ON THE DAY AT YOUR START (Pay cash or Card)

  • Store your bag safely & securely at Windsor Racecourse should you need a change of clothes or your overnight bag.