
Date
Saturday 12 September 2026
Location
London
Distances
25km and 10km options
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 Thames Bridges Challenge, and play your part in supporting vital cancer research.
Join 2000 trekkers as we venture 25km across the Capital taking in unrivalled views of the skyline from its best vantage points.
Setting out from Putney Bridge it's East towards the City, zig-zagging over the array of historic bridges each with its fascinating story and a midpoint stop at Kennington Oval for some snacks & drinks 25km later, it's a finish line celebration in Southwark past the majestic Tower Bridge.
Your entry includes free food and drink at regular rest stops, plus support including medics, marshals and massage. As you cross the finish line, you’ll get a glass of fizz, t-shirt, and a medal to commemorate your achievement.

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.

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.

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.
We'll be there on the day, supporting you before you set off. Come say hi to us in the Event Village!
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.