Yr Wyddfa Ultra 100

Event Details

The Yr Wyddfa Ultra 100 is a 102-mile (164 km) ultramarathon with an elevation gain of 5,172 meters. The event takes place in the Snowdonia Eryri National Park in Wales. The course has 11 checkpoints and a total time limit of 42 hours. The event date is Saturday, September 5, 2026. It is a self-navigation event, and live online GPS tracking is provided.

Course Information

The route starts and finishes at the village green (Cae Llan) in Betws-y-Coed, postcode LL24 0AE. The course travels to Beddgelert via the Snowdonia Slate Trail and passes through the Nant Gwynant Valley, Sygun Copper Mine, Llyn Dinas, and Llyn Gwynant. In the event of severe weather, a low-level route may be used. The event is part of a 100-mile Grand Slam series.

Logistics

• There are 250 participant places.
• Registration and bib collection occur on Friday evening and Saturday morning before the start.
• Checkpoints offer refreshments, including food and drinks. Hot food is available at indoor checkpoints.
• A drop bag service is available for two designated checkpoints.
• Pacers are permitted from the halfway point but must be self-sufficient and carry the same mandatory kit.
• Support crews are allowed at most checkpoints, with restrictions at certain locations due to limited parking and safety.
• Parking is available at the start for a fee, and parking at checkpoints may also be chargeable.
• Finishers receive a buckle: gold for top 100, silver for places 101-200, and bronze for 201+.
• Entry fee is £209.

Participant Requirements

Entrants must be at least 20 years old and in good health. They must have successfully completed a 50-mile ultramarathon under race conditions prior to the event and have experience in mountainous terrain. Competent self-navigation using a map and compass is required. Mandatory kit must be carried at all times and includes: Visit the organization's website for the most recent information.

• A hardcopy map and compass.
• Waterproof jacket and trousers.
• Headtorch and a backup light source.
• A survival bag or bivi bag.
• Emergency rations and a whistle.
• A fully charged mobile phone and a water container.