The fourth year of the One Slam virtual event saw nearly 500 runners take on their own 10 week challenge. Attempting to cover one of the many distances on offer which echo our in-person races throughout the year.

Runners from 20 different countries took part this year, aiming for distances ranging from 50 up to 1000 miles.

Runners of all ages took part once again, ranging from the youngest runner in the field Lola Campbell at 5 years old, all the way up to Alison Walker who at 82 years young, finished the 100 mile distance.

We look at this event very much as an opportunity to bring the wider Centurion Community together, involving people who would never ordinarily get the chance to race with us due to age, geography or the distances involved in our in-person events. But also as pre-season training and education around training and racing for all of our regular runners. The six coaching webinars organised by our Head of Endurance Robbie Britton, were really well received and attended. The extra One Up event in the middle for those who took that on, added a bonus too.

Over £1000 was donated to charity as a result of revenue raised from the event. This has been spread across MIND and Protect Our Winters UK. And of course 75 trees were planted on behalf of runners foregoing awards in favour of Trees Not Tees. 

So we wrap up for another year, with the final finishing tallies available here. But to finish, just a couple of bits of feedback we had from runners along the way, which make it all wortwhile. 

Thank you so much to all of you who took part and of course, we will be back kicking off the 2026 event on 25th December 2025. Details to follow.

My daughter took on the 50 mile distance as a beginner in running,  she absolutely loved it, she really enjoyed  watching her dot move over the graph and helping enter the millage for each run. She’s really struggled with Obsessive compulsive disorder over the last few years and this has really helped focus her mind over the winter months, she’s also raised money for the R.S.P.C.A the whole experience has been extremely positive for her I hope to line up at one of your events with her by my side one day. This event is perfectly timed and a great way to get people into running. 

I entered One Slam at the same time as the SDW50KM in order to help with running in the dark cold months....but also because of the webinars. As a new Ultra runner I figured I could learn a lot from you. I got struck down by a neck injury that put me out for 2 weeks and so I have ended one Slam 18 miles off my 200 mile target but I wanted to write and say thanks so much for the webinars. I've learned so much - they were worth the entry fee alone. Robbie is funny and engaging and so knowledgeable and easy to listen to. I've really looked forward to each of them. I appreciate they take time to put together and prepare for - so I wanted just to say thanks and for you to know this is appreciated and that they have been hugely valuable. I hope to see you at the startline (and the finish line) of the SDW50KM

I just wanted to message to say thanks for organising this event again. I really struggle with motivation through the winter, I find particularly that February really drags and my running mojo can get lost. But this always manages to give me that bit of oomph to get out of the door and the sense of achievement at the end is just brilliant. It is somehow like being in an actual race except competing only with myself, which I have grown to really love!