Lowri Duffield

London Marathon 2026

I’m running the London Marathon 2026

In April 2026, I’ll be running the London Marathon once again in memory of my twin sister and best friend, Rhi.


Rhi died suddenly in 2016 from an asthma attack — something so many people live with, and yet for her, it was devastatingly final. It’s hard to believe that it will have been 10 years next year. I miss her every single day. There are no words big enough for the hole she left, or how much she shaped who I am.


In 2021, I ran the London Marathon to mark five years without her — it was one of the hardest and most meaningful things I’ve ever done. Running again in 2026 feels like the right way to honour her, and to keep raising awareness of how serious asthma can be.

Thank you for reading and remembering Rhi with me 💜🧡


Every minute, someone in the UK is diagnosed with a lung condition. I want to make a difference. I'm running the London Marathon 2026 for Asthma + Lung UK, the only UK charity that fights for everyone’s right to breathe. Every pound I'm able to raise will take us a step closer to a world where everyone has healthy lungs.

Just £22 allows one of Asthma + Lung UK's nurses to answer a call on the Helpline, offering potentially lifesaving advice. I'd be very grateful for any donations you could make!

My Achievements

Thank you to my Sponsors

£10.50

Rob Pickup

Lowri, I can see the hard work you are putting in training for this challenge and it is evidently paying off. Raising money for a cause close to our family as well. Go and absolutely smash it 💪🏻

£20

Aunty Nina

Loads of love xxx

£10.50

Caroline Duder

£5

Olly

Have a good race ! You’re doing awesome

£10

Dave Andrews

Good Luck Lowri, for a cause so important to you.

£10.50

Sonia U

Well done on your training achievements. You'll smash the main event.

£15.75

Laura Bond

Your an inspiration Lowri, I’m sure Rhian will be looking down so proud of you xx

£15.75

Corinna

Good luck Lowri, you will do your sister and your family and all your friends proud. You will smash that goal.

£15

Marie Caruso-claridge

You’ll be amazing!

£20

Gareth

Go for it and break all your records!

£10

Christopher Cox

Good luck Lowri ❤️❤️

£10

Sian Griffith

Good Luck Lowri! Have a great run in memory of your sister.❤️

£31.50

Marcus Carlton

£10.50

Aneirin Labonte Jones

You're an inspiration to so many Lowri. No doubt your sister would be extremely proud. Good luck and enjoy every moment!

£15.75

Amanda Ramshaw

Try for sub 4 - I think you’re highly capable!

£10

Jen Danger

You’ll smash it xx

£25.20

Tina Jyamfi

Good luck x

£10.50

Anonymous

Best of luck xx

£10.50

Sharron Burridge

Well done super rocket 🚀 xx

£10

Jacqui Webb

You’ll be great!!!

£21

John Cobbe

£10

Tracey Sims

Good luck Ellie

£10

Ann Gill

£52.50

Ailbhe Blythe

You are amazing (and crazy!) doing this again!!

£10.50

Doris Lorraine Thomas

A contribution from Margaret Oelmann of Torfaen u3a

£10.50

Ruth Holdsworth

Best of luck!

£52.50

Bigtaffman

£15.75

Sue Ashton

£50

Charlotte Hayes

You’re amazing Lowri, well done, it takes a lot of strength to use your tragic heartbreak of loosing your sister to raise awareness and do great things in her memory, I’m sure she’d be very proud. You’re an inspiration (and I still can’t even run 5k! 🤣) xxx

£15.75

Liz Downham

Best of luck Lowri - you can do it! Xx

£10.50

Kirsty Prankerd

Good luck x

£10.50

Jennifer Harding

£23.10

Christine Sillman

Well done Lowry. I’m happy to help.

£27.51

Julia Bajjada

Best of luck Lowri xx

£23.10

Anonymous

£20

Melanie And Rob Hamilton-duthie

Well done Lowri an amazing tribute to the lovely Rhi, who showed me such kindness when I moved to Wales. Such a sad loss.

£15.75

Brett

Thinking of you at this time good luck with your training and good luck at the London marathon in April 2026

£15.75

Mark G

What a way to mark 10 years and such an important cause. Well done for taking it on and best of luck on both fundraising and running

£20

Steve

Good luck Lowri, what a great achievement 😊

£20

Ann Rigg

Good luck to you Lowri- I hope you reach your target for such a good cause 🏃🏼‍♀️‍➡️🏃🏼‍♀️‍➡️ xxx

^