July 9, 2023
Snowdonia National Park

Trail Ultra Marathon

The information on this page is not yet confirmed, and may be based on the previous years' edition.

The Ultra encompasses 7000ft of climbing over 57km and visits the beautiful Cwm Tresgl and Cwm Pennant before rejoining the Marathon Route to ascent Snowdon.


This courses below are not yet confirmed, and subject to change.
Run course
57K trail course with 2200m+ elevation.
The Ultra route takes the Marathon route up Maesgwm with views of Snowdon, then it drops down towards Rhydd Ddu. Upon reaching Beddgelert Forest the Ultra route breaks away from the Marathon route to explore the beautiful Cwm Tresgl and Cwm Pennant before rejoining the Marathon Route again and working its way along the Afon Glaslyn and Llyn Gwynant to the ascend up Snowdon to the Finger Stone via the PyG track. Once at the Finger Stone runners will descend Snowdon by the Llanberis Path all the way to the Finish line. This route is a trail running enthusiasts paradise, with mountain, forest, stone path, slate quarries and tracks it isn’t hard to keep motivated the whole way around.
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Run course


This schedule is not yet confirmed, and subject to change.
Sat 2023.07.08
Sun 2023.07.09


This information is not yet confirmed, and subject to change.

We hold a prize giving ceremony after the racing, approximate timings will be detailed in the Final Instructions however it is a good idea to listen out for information on any updates that come in over the tannoy. Sometimes the ceremony may be delayed and we wouldn't want you to miss out. We don't send out prizes after the event, so make sure you attend the ceremony and receive your big Welsh cheer!

Prize Categories for the Snowdonia Trail Ultra Marathon are (for both men and women)

  • Open: Top 5*

  • V40: Top 3

  • V50: Top 2

  • V60: 1st runner

  • V70: 1st runner

All prizes must be collected on the day.

* If any runner places in Open and Vet then a drop down system will occur.


The fees below have not yet been confirmed, and are subject to change.


Description Fee
Standard rate £ 89.99

If you opted for a postal entry there is no need to register in person before the event. Your Final Instructions will be printed on the back of your bib, and they will also be available on the website 10 days prior to the race.

If your bib is not being posted you will need to collect it from registration. Registration will take place on Saturday afternoon and before the race on Sunday morning. We will confirm specific times in your Final Instructions, which will be available on the website and via email 10 days prior to the race.

Registration is usually located on the event field in Llanberis situated next to the Community Centre - LL55 4UR


The information below may be from a previous edition of the event, and is subject to change.


All competitors must carry the compulsory kit listed below. This kit is for your safety due to the often unpredictable and quickly changing mountain conditions and isolated nature of the route.

Spot checks will be in place and anybody found without the required kit will not be allowed to race.

  • Waterproof jacket and trousers - with taped seams and integrated, attached hood.

  • Suitable off road running shoes - fell/trail shoes

  • Hat and Gloves (head and hand cover)

  • Whistle

  • Emergency food

  • Foil blanket

  • Drinking water

  • Mobile telephone


  • GPS device (watch with route downloaded)

  • Extra long sleeved warm layer

  • Compass & map (If you know how to use them)

  • Poles (we permit people to use poles)

  • Suntan lotion


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