Snowdonia Trail Marathon Eryri 2026 Trail Running Marathon

You must be at least 18 years old to take part in this race.

If you opted for a postal entry there is no need to register in person before the event. Your Final Instructions will be emailed to you, 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.

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

The Marathon usually starts at 08:30 though this is subject to change. The race start time will be confirmed in your Final Instructions which are available to view on the website 10 days prior to the race.

There will be staged cut-offs across the race to ensure the safety and well-being of volunteers and competitors.

11:20 - Mile 11.5 - Cut off at Beddgelert (average 4mph)

14:15 - Mile 19.6 - Cut off at Pen y Pass (average 3.6mph)

18:00 - Mile 27.4 - Finish line cut off (average 2.7mph)

There are 5 aid stations on the Marathon route, plus an emergency water station.

Water and High 5 energy drinks and gels will be available at 2, 6, 11, 15 and 19 miles.

At 11 miles (Beddgelert) and 19 miles (Pen y Pass), there will also be fruit, crisps and sweets.

There will be an emergency water station at mile 23 (Clogwyn Station). Due to the difficulty of supplying water containers high on Yr Wyddfa (Snowdon), there will be limited supply here. Please ensure that you have filled your water bottles at the Pen y Pass aid station, and only take water at this station if absolutely necessary. We are unable to re-fill water containers at this point.

Please note that our races are cupless, meaning you must provide a reusable race cup or bottle to fill at feed stations. Race cups are available at the event shop in the event village, at heavily discounted prices.

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 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 Marathon Eryri are (for both men and women)

Overall: Top 3*

Senior: 1st runner

V40: 1st runner

V50: 1st runner

V60: 1st runner

V70: 1st runner

All prizes must be collected on the day.

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

All competitors must carry the mandatory kit listed below. This kit is for your safety due to the often unpredictable and quickly changing mountain conditions in Wales 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/Buff and gloves (head and hand cover)
• Whistle
• Emergency food
• Foil blanket
• Mobile telephone
• Drinking water
• Reusable race cup or bottle.

ADDITIONAL PERMITTED / ADVISORY KIT:

• 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