2026 Edition: 14th - 20th September 2026

WhyWeRun 250 is a 5-day, 250km ultramarathon on the Welsh coast.
The world’s most supportive ultramarathon.

This is not a race. There are no podiums. No cut-offs. No pressure to compete with anyone else. Just a group of ordinary people choosing to take on something extraordinary together.

WhyWeRun 250 is built on courage, connection, and purpose beyond yourself. You do not need to be an elite runner to belong here. You do need commitment, heart, and a willingness to prepare for something that will test you, support you, and stay with you long after the final day.

Across five days, you will share wild landscapes, long miles, honest conversations, and the kind of team spirit that reminds you how much stronger we are when we move together.

This is WhyWeRun 250. Are you ready to find out what you are capable of?

  • Where?

    St Davids, Wales.
    Our route follows sections of the stunning Welsh Coastal Path - expect rugged cliffs, golden beaches, rolling countryside, and abundant wildlife.

  • When?

    Second week of September.
    Late summer offers ideal conditions for adventure - long days, crisp mornings, and the beauty of the Welsh coastline at its best.

  • Distance?

    250km over 5 days.
    Distances vary daily, but the true challenge lies within. Each lap is a test of resilience, teamwork, and determination to keep moving forward together.

  • Terrain?

    60% coastal trail, 40% road.
    Varied and undulating. Runners should be prepared for both smooth road miles and technical coastal paths.

  • Elevation?

    6,900 metres of climbing.
    Rolling elevation throughout the week - be ready for tired legs and breathtaking views in equal measure.

  • Participants?

    Strictly limited places.
    WhyWeRun is small by design - you’ll know your fellow runners by name, and finish as part of one incredible team.

Steve Waters

"⁠It takes a certain kind of person to sign up for these distances, and many of us arrived as strangers. But every morning, every lap, and every evening, we lifted each other. From barely being able to shuffle around camp to dancing and tackling 6000 meters of elevation - it’s amazing what you can achieve when you’re surrounded by inspirational people. In your lowest moments, there was always someone to give you the energy you needed. I’ve made so many connections and can’t wait for future events. For me that’s WhyWeRun."

Steve Waters
Class of 2024

What's included

  • 6 nights accommodation - single bed in a shared 8-person dormitory with en-suite shower and toilet. You choose between a women’s dorm, men’s dorm, or mixed-gender dorm.
  • On-site medical support - medical staff available at the campsite and on-course
  • On-site therapists - physios and osteopaths on-site to help you finish
  • Educational workshops - access to training, preparation, and mental resilience workshops throughout the year
  • Drinking water - unlimited access to hot and cold drinking water
  • Self-catering facilities - access to fridge, microwave, and toasters at the campsite
  • Live tracking - friends and family can follow your progress in real time
  • Event photography - digital copies of official event photos available to download each evening
  • Souvenir medal - commemorative medal to celebrate your achievement
  • Partner brand discounts - access to exclusive discounts with supporting brands
  • Extra surprises! - special touches and experiences throughout the event
  • Class WhatsApp group - access to a private group to connect with fellow participants and crew

Everything you need is here. All that’s missing is you. Ready to take the first step?

Let’s Go
Danny Laverick

"This is so difficult, I think you’d need a book to do it justice. It’s a journey of growth and discovery, it’s a celebration of bigmoose and everything they stand for. It’s a bond building week you never knew was possible. It feels like a dream!"

"The true meaning of community, acceptance and support, in a space with the capacity to help you understand your purpose and push beyond your limits."

Danny Laverick
Class of 2024

The Course

We do things a little differently, and we think you’ll love it.
Two iconic Welsh loops, each with its own adventure and moments to savour.
You’ll cross paths with fellow runners, share high-fives, and soak up the atmosphere that makes this event so special.
Once you’ve tried it, you’ll never think of loops the same way again.

Route 1: Blue Lagoon

Route 1: Blue Lagoon

The shorter of the two loops — but without doubt the most spectacular. You’ll take in some of the finest sections of the Welsh Coastal Path, passing the famous Blue Lagoon and the charming fishing port of Porthgain, before looping back on the road and rejoining the coastal path to return to camp. A shared segment of this route means you’ll regularly pass and encourage fellow runners — a true team atmosphere.

15 km per lap
322 m elevation per lap
Route 2: Whitesands

Route 2: Whitesands

A longer and more technical loop through wild and varied terrain. Starting with a 7.5 km road section, you’ll climb towards the base of Carn Llidi, circling the peak before picking up the coastal path through Pembrokeshire Coast National Park — keep an eye out for wild horses. The route finishes with a road return to camp, completing a loop full of contrasts and big views.

19 km per lap
439 m elevation per lap
Kelly Harrison

"WhyWeRun is much more than a test of endurance or a charity event. It's an opportunity for deep connection and shared vulnerability. Running side by side with others I learned that it’s not about how fast you go but about the bonds you form and the growth you experience along the way. It pushed me physically and to explore emotionally, leaving me feeling more whole and profoundly grateful for the sense of community and the lessons I learnt along the way. Taking part changes you for the better, but with a connected sense of purpose you can hobble away knowing you've also made an impact on the world by doing so. "

Kelly Harrison
Class of 2024

Your week of adventure

A 5-day journey across the two iconic routes. Here's what your week will look like.

Note: Route distance and elevation are based on the GPX files, which do not start and finish directly on the real-life placement of the start/finish arch. Distances and Elevation will vary for runners.

Day Route Loop Dist. (km) Loop Asc. (m) Laps Total Dist. (km) Total Asc. (m)
1 Blue Lagoon 15 380 3 45 1140
2 Whitesands 18.65 439 3 56 1317
3 Blue Lagoon 15 380 4 60 1520
4 Whitesands 18.65 439 3 56 1317
5 Blue Lagoon 15 380 2 35 760
253 6054
Laura Booth

⁠"WhyWeRun is all the best bits of life squeezed into a run, people, connection, care, adventure, inspiration, discovery, challenge, transformation, pain and joy. I think everyone should give themselves the gift of the opportunity to run 250km with strangers and see who they meet along the way and at the other side. It felt brutally beautiful, it felt like a bubble of some of the kindness people I have ever met, it felt life changing."

Laura Booth
Class of 2024

Choose how you want to enter

Two ways to join our WhyWeRun 250 in Wales.

Whichever route you choose, you’ll be on the same start line, part of the same team, and taking on the same 5-day journey along the Welsh coast.

Entry + Fundraising

Fee: £750

  • Pay £750 for your event entry, and commit to raising a minimum of £500 for bigmoose.
  • This option is ideal for runners who want fundraising to be part of their journey and their impact.

Entry Only

Fee: £1250

  • Pay £1250 for your event entry, with no fundraising requirement.
  • From this, £500 is donated directly to bigmoose, so your place still contributes to the wider purpose of the event.

Why two options?

Fundraising is a meaningful part of WhyWeRun, but we also know it can feel like a barrier for some people alongside training, work, family, and life.

These two routes give more people a way to say yes to the challenge, while keeping purpose at the heart of what we do.

Payment options

Once your place is confirmed, you’ll be asked to pay your initial £150 deposit within 7 days to secure it.

After that, you can choose how to pay the remaining balance for your selected entry option.

For Entry + Fundraising (£750 total)

  • Deposit: £150 within 7 days of being awarded a place
  • Full Payment: remaining £600 within 30 days of deposit
  • 2 Equal Payments: £300 one month after deposit, then £300 the following month
  • Split Payments: £150 per month for 4 months following deposit

For Entry Only (£1250 total)

  • Deposit: £150 within 7 days of being awarded a place
  • Full Payment: remaining £1100 within 30 days of deposit
  • 2 Equal Payments: £550 one month after deposit, then £550 the following month
  • Split Payments: £275 per month for 4 months following deposit

Entering is free. Once awarded a place, your £150 deposit secures it, and you can then select the payment schedule that suits you best.

Claire Seymour

⁠"The true meaning of community, acceptance and support, in a space with the capacity to help you understand your purpose and push beyond your limits."

Claire Seymour
Class of 2024

If you’re ready to challenge yourself, and make a real difference - come and join us.

This is more than just an ultra. It’s an adventure with purpose.

If you like what you’ve seen, and you’re ready to run not just for yourself, but for others too - we’d love to have you with us.

This is your invitation. Let’s do this, together.