Two-Time Cancer Survivor

Run Cass Run50km for Hope

50km along the stunning Welsh coastline. 1,800 women. One mission: to raise funds for the cancer charities that save lives.

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Cass Brownlow Davies at the London Marathon, smiling with hand to camera

Cass at the London Marathon, now taking on 50km

Why This Matters

Running for Those Who Can't

Every year, cancer takes too much from too many. The charities fighting it, funding research, supporting survivors, caring for families, rely on people willing to go the extra mile. Literally.

On 11 April 2026, Cass will line up alongside 1,800 women at She Ultra in Pwllheli, North Wales, for 50 kilometres along the stunning Llyn Peninsula coastline. As a two-time cancer survivor, she knows what these charities mean and she's running to give back.

Cass running in a Cancer Research UK race
Cass running for Cancer Research UK

Every donation funds the fight against cancer. Every share spreads the word.

She Ultra 2026

The world's largest all-female ultra marathon where hope, strength, and community unite. No cut-offs, only smiles. Founded by Huw Williams, a terminally ill cancer patient who turned his diagnosis into a mission to raise £1 million for women's cancer charities.

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11 April 2026

Saturday, Race Day

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Pwllheli

North Wales, Llyn Peninsula

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50 Kilometres

Coastal path ultra marathon

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1,800 Women

Sold out, running together

Learn More About She Ultra

Track Cass Live

Follow every kilometre of Cass's 50km run in real time using the official She Ultra live tracker. Search for her bib number to find her on the map.

1460
Cass's bib number
Open Live Tracker ↗

Opens in a new tab · Search for bib 1460 · Live updates on race day

Wild Welsh Weather

Cold, blustery, and showery — the Llyn Peninsula in full April form. A wet start gives way to brighter spells by afternoon, with the wind building all day. Exactly the backdrop this run deserves.

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Morning Start

Showers

Rain at the start line, easing to drizzle through mid-morning

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Temperature

4–9°C

Coldest at the start, feels like 4°C — layers essential

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Wind

Up to 31 mph

Building through the day — breezy at the start, strong by the afternoon

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Afternoon

Brightening

Sunny spells from midday, with some sprinkles — the best of the day

Source: timeanddate.com forecast for Abersoch · Updated 10 April 2026. 50km of wild Welsh coastline in whatever the sky throws at them — 1,800 women will cross that finish line.

"We want to make sure that Hodgkin survivors keep surviving, and that they know we're here, we care, and we're able to help."
Hodgkin's International

Help Fund the Fight

Whether you donate, share this page, or simply spread the word, it all matters. 50km of Welsh coastline. Two incredible charities. Every penny counts.

Donate via JustGiving