Once signed up to your chosen route, you can 'link' your registration with STRAVA / GARMIN/ or FITBIT - so your activities will automatically feed through to our online map, OR you can add your activity distances manually via logging into your Ultra Britain account. Once 'logged' you'll progress along your route on our virtual Antarctica map along with other participants!

Start from Boxing Day onwards (before 31 January at latest) - and you've until 31 March (Easter Sunday) to complete your challenge. Get half-way or further by 14 February to be included in the Valentines Prize Draw. It's a great motivator to get outdoors, and get in shape for '24

how it works

Zoom in & out of the map, on your chosen route, to find your location, OR use Search Bar in the Table (surname).

Note: Activity distances will not be logged before 26 December ’23 (Boxing Day). Map is not an accurate plot of Antarctica!

Check out our FAQs


8 February - Find out what an Ultra Challenge is all about!

Join us online with a panel of experts to find out what makes these events so special – and how you can take on an unforgettable challenge – to push yourself further – and to succeed! It starts 6pm on the Thursday 8th – and there’s special ‘on the night deals’ if you tune in! Register via the ZOOM link below – it’s a ZERO fee!

APRIL 2024

Sat 6th

Easter 50
Ultra Challenge®

NOTE - Event is Saturday AFTER Easter weekend

The first Ultra Challenge of the season – and a good one to take on after the Easter break! From the Windsor Racecourse basecamp, you can Walk, Jog or Run a looped route 50 km, 25 km, or 10 km through historic Windsor, along the Thames Path, and enjoy some wonderful surrounding countryside. You’ll get a few Easter surprises, a neck buff & medal, hot food & drink at the finish – and it’s a great event to test those legs, and to get in shape!


Join us the weekend after Easter.  Windsor is the historic backdrop – and the Racecourse is our Challenge basecamp. You’ll head through the Great Park, with fantastic views of the Castle, along the famous Thames Path, and take in some wonderful surrounding countryside.  It’s easy to get to, there’s plenty of parking – a great atmosphere, and distance options to suit all.

  • 50 km (Figure of 8 – 2 loops) – through Windsor to a rest stop at Runnymede, and back to basecamp via The great Park for a picnic lunch. Then a 2nd 25 km loop out of basecamp to Eton and taking in the Thames Path. Hot food at the finish.
  • 25 km (Loop) – through Windsor with a rest stop at historic Runnymede, and back to basecamp via the Castle’s Great Park. Hot food at the finish.
  • 10 km (Loop) – around Windsor and the castle area. Picnic at finish.

Transport Options

  • Parking available at basecamp.
  • Pre & post challenge bus transfer options from Slough Station (good links to London & the west)

Optional bookings - do once you've signed up to the Challenge.

16 Amazing Challenges

Over 200,000 adventurers have taken on an Ultra Challenge® so far, and the 16 unique events make up the UK’s biggest & best series of treks & trail runs – which have also raised £50+ 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!


Lake District Ultra Challenge

8-9 June 2024

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


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Isle of Wight Ultra Challenge

5-6 May 2024

106 km ‘Full Island’ Loop + Half & Quarter Island options.


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London 2 Brighton Ultra Challenge

25-26 May 2024

100 km + Half & Quarter Challenge distance options


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South Coast Ultra Challenge

7-8 Sept 2024

100 km + Half & Quarter Challenge options


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Jurassic Coast Ultra Challenge

18-19 May 2024

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


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Thames Path Ultra Challenge

14 – 15 Sept 2024

100 km + 3/4 + Half & Quarter Challenge options

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

+ Friday Moonlight 10K Walk (Central London)

+ The Henley 10K (Sunday)


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South West Coast 50 Ultra Challenge

3 August 2024

50 km Loop + 25 km & 10 km Challenge options


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Peak District Ultra Challenge

6-7 July 2024

100 km Loop + Half & Quarter Challenge options & The Bakewell 10 Mile. 


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Cotswold Way Ultra Challenge

22 – 23 June 2024

100 km + Half & Quarter Challenge options.


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Chiltern 50 Ultra Challenge

28 Sept 2024

50 km Loop + 25 km & 10K Challenge options


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North Downs 50 Ultra Challenge

27 July 2024

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


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Easter 50 Ultra Challenge

Sat 6 April 2024

50 km 0r 25 km Loops 


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London Summer Walk

Sat 24 August 2024

25 KM or 10 KM looped route – Woolwich Start / Finish


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London Halloween Walk

Sat 26 October 2024

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


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NEW – Kent Downs 50 Ultra Challenge

Sat 12 October 2024

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



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