Ultra Challenge Series
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Looking for a challenge – to test yourself, to get in shape, or bond with friends on a weekend adventure? If so, an Ultra Challenge® is for you.
UK’s No 1 Series of treks & trail runs! Take on a challenge at your pace and fundraise for Against Breast Cancer!
Whether along a stunning coastline or on trails through magnificent countryside, you’ll get full support all the way – including plenty of food & drink, medics & massage, camaraderie, a medal & T shirt – and an amazing sense of achievement. With 20 events to choose from, and distance options ranging from 10km up to the full 100km–there’s an Ultra Challenge waiting for you in 2026.
EARLY BIRD DEAL ON – 25% off Standard Registration Fees with the Charity Sponsorship option if you sign up by the 31st October 2025. Use code 25%CHARITY at checkout.
Find out moreTo sign up to raise funds for Against Breast Cancer, choose your event and follow the links. You can choose both full and mixed fundraising options, and you will be supported every step of the way by our experienced team of fundraisers.
For more information, choose the event you are interested in below or visit the Ultra Challenge Series website. Alternatively, find out more about Against Breast Cancer’s other running and walking events.
Halloween Walk
25 October 2025
Why not treat yourself to a hair-raising hike around some of the City’s scary streets and historic haunts?
London Winter Walk
24-25 January 2026
A great event to walk off the Christmas celebrations, and to kick start your New Year fitness regime!
Bath 50 Ultra Challenge
28th March 2026
Centred on this elegant historic city, a challenge event you can take on at your pace.
Windsor 50 Ultra Challenge
18th April 2026
The Windsor 50 Ultra Challenge invites you to walk, jog or run a distance of your choice.
Isle of Wight Ultra Challenge
2-3 May 2026
A challenge event you can take on at your pace. Join us and take on the island’s coastal path.
Jurassic Coast Ultra Challenge
16-17 May 2026
Join 3,000 adventurers of all experience levels & ages and Walk, Jog or Run the spectacular Jurassic Coast.
London 2 Brighton Ultra Challenge
23-24 May 2026
Join 2,000 adventurers of all experience levels & ages and take on a classic capital to coast route.
Lake District Ultra Challenge
6-7 June 2026
Test yourself on the fantastic Lake District Ultra Challenge and take on England's finest countryside.
Cotswold Way Ultra Challenge
13-14 June 2026
A stunning setting for a testing challenge - with some fantastic views en route and tough hills in between!
North Yorks Ultra Challenge
20-21 June 2026
A stunning coastal & moorland challenge, which you can take it on at your pace.
Peak District Ultra Challenge
4-5 July 2026
Over 2,000 adventures will take on the fabulous Peak District Ultra Challenge as a walk, jog or run.
Gower Peninsula Ultra Challenge
18-19 July 2026
This challenge invites you to walk, jog or run a distance of your choice in the stunning Gower Peninsula.
South West Coast 50 Ultra Challenge
25 July 2026
Take in the first Minehead section of the stunning & famous 630 mile Coastal Path.
North Downs 50 Ultra Challenge
1 August 2026
Walk, Jog, or Run with a fabulous challenge setting out from the Guilford basecamp.
London Summer Walk
22 August 2026
Explore some of the Capital’s historic areas with a tour along the Thames’s eastern
section.
South Coast Ultra Challenge
5-6 September 2026
Take on some of England's finest scenery along the famous South Downs Way National Trail.
Thames Moonlight 10
11 September 2026
A fantastic evening walk through London, taking in famous landmarks along a great route with full support.
Thames Bridges Trek
12 September 2026
This challenge ventures across the Capital taking in unrivalled views of the skyline from its best vantage points.
Thames Path Ultra Challenge
12-13 September 2026
Take on this challenge from Putney Bridge, following the river upstream past to Henley.
Chiltern 50 Ultra Challenge
26 September 2026
You can Walk, Jog, or Run along the historic trails and rolling hills of the Chiltern countryside.
Kent Downs 50 Ultra Challenge
10 October 2026
The end of season Ultra Challenge crossing the North Downs and passing Leeds Castle.