The Christmas Marathon is a FREE festive challenge between 1-31 December. You can choose to either run/walk 26.2 miles, or swim 10k or ride 100km. There is also THE TRIPLE challenge - to do all 3!

There is no fee to enter, just a lot of fun and a great medal. Christmas Marathon medal, swim cap and t shirt available for purchase.

If you have already entered and want to change your details, or buy some merch, please follow the links below:

To logon you'll need your email and password you set for your Active registration. Please use this guide.

To login to your Active account, please click here

Christmas Marathon is over the 31 days of December. You can start on 1 Dec and finish 31 Dec, or somewhere in between.

All results need to be submitted before 23:45 on 5 January 2026.

You can take part indoors or outside, in the gym or on trails, in a pool or in a safe, staffed swimming location. UK based participants only.

You can even do a mix of venues/locations. It's your challenge, you decide.

When you enter Christmas Marathon, if you have purchased the medal, t shirt or swim cap we'll send you these straight away.

The medal will be marked in an envelope stating that it is ONLY to be opened once you have completed your challenge.

If you order your merchandise/medal prior to 15 December, we'll get it in the post (Royal Mail) to hopefully arrive prior to Christmas. Merchandise purchased after 15 December will most likely arrive in early January.

Yes, absolutely - we encourage it!

You can fundraise for whomever you wish. It would be great to know who you are fundraising for, so please do include this information in your registration.

We recommend you order as early as possible to ensure a pre-Christmas delivery.

The last possible date for orders received by us is Monday 15th December 2025 - we will ensure these are posted in time for delivery pre-Christmas

You can log your activity on apps, trackers or even manually

To submit your result all you need is one image of your results - this could be a photo or screenshot of your app or even a photo of a paper record.

There will be a link to the results page on the home page of the website.

If you do not wish to be included on the leaderboard, but still wish to be recorded as having completed your challenge, please submit your time as 59:59:59

When you have completed your challenge, please take one image of your result (screenshot of your app/tracker or manual record) and submit it here (online results open from 1 December)

You will need your R-Number to submit your result. This can be found on your confirmation email.

Time is recorded as hh:mm:ss

This will add you to our leaderboard, once we have verified your result.

If you do not want to submit a time or be included on the leaderboard - simply record your time as 59:59:59

If you are unable to find your confirmation email for your R-Number, please email us at info@participationsport.com and we'll let you know your number.

You must complete your challenge by 23:45 31 December.

You must also submit your result by 23:45 5th January. If you do not submit your result before this time, you will not be included in the results.

If you have entered but no longer able to take part, then you don't need to do anything.

If you didn't buy any merchandise or medals, then you will simply not submit your result.

If you did buy merchandise and you'd like this sent, then please send us an email on info@participationsport.com

You can exchange your t shirt for a different size. You will need to post (and pay) for a return and if the t shirt returned is unused and in good condition we'll send you your preferred size.

No exchanges will be possible after 5 January. All exchanges are subject to availability.

Refund and deferrals are not offered. The event is free to enter and any merchandise or medals purchased are pre-ordered and will be sent to you directly.