Challenge Events

Ultra Challenges

Explore unique events available on the Ultra Challenge website, and sign up for one of the UK’s #1 endurance events.

As a team or individual you can walk, jog or run 25k, 50k, 75k or 100k challenges across the UK.

Saucony London 10K

Following a sell-out 2023 and 2024 event, don’t miss your chance to be a part of 2025! Enjoy an incredible closed-road route through central London, past some of the city’s most famous landmarks, including Big Ben and the London Eye all whilst running for WHC! Flat and beginner friendly.

5k Inflatable races

Bounce your way through The World’s BIGGEST and most EPIC Inflatable 5K obstacle course! The excitement has been pumped up to the MAX, you’ll be jumping, sliding, and bouncing your way to the finish line like never before.

So grab your friends, lace up your trainers, and get ready for the ultimate inflatable adventure!

Run Shoreditch

Saucony presents RUN SHOREDITCH – a brand-new 10K closed-road race hitting the streets of East London on Sunday 21 September 2025.⁠

Brought to you by the organisers of Hackney Half, Saucony London 10K, and Oxford Half, this is your chance to be part of London’s next big race.

Tough Mudders

The ultimate obstacle course challenge now more obstacles than ever before! With no competition and no timing, it’s just you, your teammates and muddy strangers working together to conquer the course and earn the world-famous orange headband.

WHC's Big Sleepout

Swap your bed for a sleeping bag and help change the lives of people who are homeless, or facing homelessness.

Full range of events at Run for Charity

Find hundreds more events at our partner site, Run for Charity. Whether it be running, pushing, jogging, jumping, walking - there is something on almost every weekend of the year locally and across the UK. Accessible events for all ages and abilities.