
Date
18-19 July 2026
Location
Penrice Castle
Distance
Choose from 10k, 25k, 50k or 100k!
Choose from the following options: 1. Full sponsorship: pay a small registration fee, we will pay for your place and you fundraise a set amount for us. 2. Mixed funding: Pay for half your place cost and fundraise less for us. We will pay half of your place cost. 3. Own place: Pay for your place and fundraise whatever you can for us.
Choose your distance and pace, and join Team Cancer Research UK in the Gower Peninsula Challenge, and play your part in supporting vital cancer research.
The stunning Gower Peninsula Ultra Challenge is back for 2026. 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

Step: 1
Decide whether you'll enter with your own place or get a charity place

Step: 2
Sign up to get Team Cancer Research UK perks

Step: 3
Get fundraising for life-saving research

Step: 4
Get over that finish line and smash your fundraising target

could fund a clinical research grant for one day, funding doctors and nurses to find new ways to beat cancer.

could fund a cancer nurse for one day, giving people confidential cancer support and guidance.

could fund a trial for one day to test new radiotherapy techniques for treating bile duct cancer.
Training tips and plans to help you prepare
Fundraising support to help you smash your target
An official finisher’s medal for completing your race
Your support powers our life-saving research to beat cancer. Discover our resources so you can train with purpose for your event.

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

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

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
Find answers to the most frequent questions about our sports events.
Any questions about your event or fundraising? Contact our friendly Supporter Services team today.
If you didn't find an event you were interested in, check out our other sports events.