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Three Cliffs Bay, a beach on the Gower Peninsula in South Wales.

2025 Gower Peninsula Challenge

Take on Gower Peninsula Challenge

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Date

19 July 2025

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Location

Penrice Castle

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Distance

Choose from 10k, 25k, 50k or 100k!

How to join Team Cancer Research UK

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Step: 1

Decide whether you'll enter with your own place or get a charity place

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Step: 2

Sign up to get Team Cancer Research UK perks

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Step: 3

Get fundraising for life-saving research

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Step: 4

Get over that finish line and smash your fundraising target

A new Ultra Challenge for 2025, set in the stunning Gower Peninsula. The UK’s first Area of Outstanding Natural Beauty and famous for its golden beaches, limestone cliffs, wild moors, ridges, and woodlands.

The basecamp is in the grounds of the historic Penrice Castle, with weekend camping options and the 100km challenge is a figure of 8 route made up of west & east loops which take in the best of the Peninsula, its history, and its varied, unique landscape. With 50km, Marathon, 25km, and 10K challenge options, as well as a bar & entertainment at basecamp – this will be the highlight of the season!

Take a look at the event factsheet(PDF, 3.04 MB)

Why run for Cancer Research?

Meet Bridie

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On the day of my first Great North Run I wore my Cancer Research UK vest with pride, I was so happy to be taking part.

- Bridie

The difference your money makes

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30 CRUK runners taking on the Gower Peninsula Challenge

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Hitting their fundraising targets to raise a total of around £6,000

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Could buy an autoclave to sterilise lab equipment

Team Cancer Research UK participants receive

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A personalised Cancer Research UK running t-shirt or vest

sports shoes, icons, running, shoes, trainers, walking.

Training tips and plans to help you prepare

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Fundraising support to help you smash your target

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Support on the day at cheer points along the route

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A post-race reception to celebrate

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An official finisher’s medal for completing your race

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Get training support

We've teamed up with experts to give you the best training support and advice for your event. Whether it's your first time training or you're looking to smash a PB, we've got a training plan for you. Get training plans and advice

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Get fundraising support

We're with you every step of your fundraising journey so you can smash your target. Once you've signed up, we'll send you everything you need to get going such as fundraising ideas, top tips, planners and posters. Get fundraising materials and support

A runner in Cancer Research UK outfit runs up a grassy path on a hill with trees in the background.

Get kitted out

We worked with Scimitar to create Cancer Research UK sportswear that’s comfortable, looks great and supports our vital work. 20% of the price of these products will be paid to Cancer Research UK. Visit the Scimitar shop