Challenge Running Ltd

Challenge Running Ltd

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Trail Running Event organiser. home of the UK's largest Backyard Ultra and other ultra distance races.

28/08/2026

This feels a bit "what's your name and where d'you come from?" but...

What's your dream race??

Get a lorra lorra comments coming in and get the conversation started!

(Do you think I'm going to be putting people off soon with these increasingly aged/niche references? 🤔)

Photos from Challenge Running Ltd's post 25/08/2026

We're thrilled to have been featured in this month's Opulent Traveller as one of the UK's most exclusive wellness retreats.

"All-inclusive. Fully immersive. A once-in-a-lifetime wellness experience in the heart of Thetford Forest." Flick through to see the pages from our glossy spread.

Entries for our September retreat close soon but spots for our Spring/Summer edition are also currently available.

Let us know your favourite part of staying with us 🙏

https://www.challenge-running.com/

23/08/2026

Time is ticking by. Entries will shut 2 weeks before the event. This means you have until Saturday 29th August to get your entries in for the Thetford Backyard Ultra Festival.

Join us for an incredible event. Low-key backyard ultra where all that matters is how far you can push yourself.

We have a 6 and 12 hour event for those who want to give it a go but don't want the financial outlay of the whole event.

As always if you fancy volunteering go to the website!

We can't wait to see you all there and see what numbers we can get this time!

https://www.challenge-running.com/e/thetford-back-yard-ultra-festival-11505

Photos from Challenge Running Ltd's post 19/08/2026

Women haven't just taken part in ultrarunning history. They've helped shape it.

From Mavis Hutchison taking on Comrades when women weren't officially allowed to compete, to Ann Trason dominating Western States, Courtney Dauwalter Courtney Dauwalter redefining what's possible and Rachel Entrekin becoming the first woman to win Cocodona outright and our own Sarah Perry showing what is possible!

Different generations. Different distances. Different barriers.

But every one of these women pushed the sport forward. Now we have organisations such as !

And this carousel only shows seven of them.

Who would you add to the list?

Photos from Challenge Running Ltd's post 15/08/2026

New to the Back Yard concept or having to explain for the 50th time the race you are doing this year? Read through the slides and share so people can understand how awesome this format is!

The current world records: 119 laps (495.8 miles and almost 5 full days) for the men, held by Phil Gore. 95 laps (395.8 miles) for the women, held by Sarah Perry. Both run at Big's Backyard Ultra, the original event, created by Lazarus Lake.

Our next back yard is Thetford Backyard Ultra Festival is on 12th September. Come and join us for an unforgettable experience.

Same rules, same brutal simplicity: 4.167 miles, every hour, until one person's left.

https://www.challenge-running.com/e/thetford-back-yard-ultra-festival-11505

14/08/2026

Let's talk numbers.

Like everything else, our costs go up every year. Race insurance, venues, food, portaloos (yes, really), the list goes on.

So from 1st September, entry fees are rising by around 10% across the board.

We're not going to pretend that's nothing. But we are giving you fair warning and a proper window to lock in the current price before it changes.

Enter before 1st Sept, pay what you'd pay today.

The secret's on the sign. Keep going. And get in before the price increases.

12/08/2026

You've had that 100 miles in your sights. It's not been plain sailing. Your body and your mind have wanted to give in and take the DNF but.... you keep going. The legs keep taking steps forward and you do it!

There are easier ways of getting to 100 miles, but that's exactly why it's such a milestone in the Backyard.

Can we tempt you?

12th September - Thetford Forest Backyard Ultra Festival

Includes a 6 and 12 hour option so you could go for that first 25/50 miler!

https://www.challenge-running.com/e/thetford-back-yard-ultra-festival-11505

Photos from Challenge Running Ltd's post 07/08/2026

You've slept on your pillow wrong and now you can't move your neck - It is time to join the Ultramarathon club. It's where all the cool kids are.

Send this to someone who you think it's about time did an ultra!

https://www.challenge-running.com/

Photos from Challenge Running Ltd's post 05/08/2026

Here are the answers to some of our more common questions!

If you have any other questions, head to our website where there is a wealth of information or send a message and we'll get back to you!

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Suite 108, Communications House
Colchester
CO27NN