2026 Race to the Stones Ultra Marathon
Take on the Race to the Stones 2026
Date: Saturday 11 - 12 July 2026
Location: Lewknor, Oxon, OX49 5RR to Rutland Farm, Avebury, SN8 1RH
Distance: 100km / 50km
Whether you already have your own place or you'd like a charity place, join Team Cancer Research UK in 2026 for the Race to the Stones and play your part in supporting vital cancer research.
How to join Team Cancer Research UK
Decide whether you'll enter with your own place or get a charity place
Sign up to get Team Cancer Research UK perks
Get fundraising for life-saving research
Get over that finish line and smash your fundraising target
About the Race to the Stones
Have you got what it takes to conquer the oldest path in Britain? The Ridgeway has endured 5,000 years. You just have to last 100km.
Find out for yourself what draws 3,000 people from around the world each year to follow in the footsteps of Romans, Vikings and mythical warriors in their quest to reach the ancient stone circle at Avebury.
Threshold Sports believe in opening up Ultras for All and from sign up to the finish line, they will support you every step of the way along this incredible journey! With a completion rate of over 90% this is the perfect 1st ultra.
This is a challenge for all ages, experience and fitness levels. Whether you’re a seasoned runner, patient plodder or weekend walker – choose to camp over the weekend, take on 100km in one go, or 50km in one day. Grit and determination will get you to the finish and secure those memories to last a life-time.
What's included?
• Training programme tailored to all levels
• Fully signposted trails for navigation in day & night conditions
• Routes through heritage sites, AONBs and along National Trails
• Fully stocked pit stops including cereal bars, chocolate, sweets, fresh fruit, crisps, sandwiches and more
• Hot meals, showers, drinks and sports nutrition
• Bag transport to the finish
• Qualified medical personnel at all pit-stops & medical clinics at basecamp & finish points
• Finisher’s medal
• Individual chip timing throughout the event
Why run for Cancer Research UK?
Bridie has taken on the Great North Run six times as part of Team Cancer Research UK. She fundraises in memory of her Dad, who died of bowel cancer.
My first runs were really hard, but I trained and persevered, and I got better. 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. The atmosphere was amazing and crossing the finish line I was ecstatic! I was so proud of myself and how far I’d come. Every step is worth it. For every person we lose to cancer, it spurs me on even more to continue fundraising so that we can find a cure.
The difference your money makes
70 CRUK participants taking part in the Race to the Stones
Hitting their fundraising targets to raise £57,000
Could fund a research assistant at a Cancer Research UK lab for 2 years
Team Cancer Research UK runners recieve
A personalised Cancer Research UK running t-shirt or vest
Support with fundraising and training to help you smash your challenge
Support in the run up to the event and on the day
An official finisher's medal for completing your race
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 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 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.