Yr Wyddfa Ultra 100

Betws-y-Coed, United Kingdom • 6 Sep 2025

The Yr Wyddfa Ultra 100 is a challenging 102-mile ultramarathon held in Snowdonia National Park, Wales, featuring 5,788 meters of ascent across stunning mountainous terrain. The race starts and finishes in Betws-y-Coed and includes 10 well-supported checkpoints offering refreshments and medical aid. It is a self-navigation event requiring participants to carry mandatory safety and navigation kit.

With a 40-hour cut-off time and a limit of 250 places, the race demands prior ultramarathon and mountain experience. Finishers earn a distinctive buckle, with gold awarded to the top 100. Live GPS tracking enhances spectator engagement, and the event emphasizes safety and environmental care. Visit the organization's website for the most recent information.

Race information

100 mi
5788 m+
Yr Wyddfa Ultra 100 Mile
Visit the organization's website for the most recent information.
Trail runs nearby

The Paddy Buckley Round is a challenging, professionally guided running event held in Northern Snowdonia, Wales. Covering a loop of just over 100 km with approximately 9,000 meters of ascent and descent, it includes 47 mountain summits across major ranges such as Moelwyn and Nantle Ridge. The event..

Ultra X Wales is a multi-stage ultra-marathon held in southern Snowdonia, western Wales, featuring stunning landscapes from the northern Cambrian mountains to lakes, coastline, mountains, and beaches. The event offers four race options: a 110km two-day race, and single-day races of 60km, 50km, and 2..

UTMB Index

The Guided Trail Run at Bod Petryal offers participants a relaxed 10km experience through the scenic Clocaenog Forest. The route features beautiful forest trails, leading to the village of Melin y Wig, and includes a stretch along the Brenig way beside the river Clwyd. This event emphasizes a friend..

Ogwen | Yr Helgi Du 2025 is a mountain trail running event held at Plas y Brenin, Capel Curig, in the scenic Ogwen Valley of Eryri (Snowdonia), North Wales. The race offers three distances—10K, 25K, and 40K—covering some of the highest mountains in England and Wales, including the Carneddau and Glyd..

UTMB Index

Open to Offas is a long-established walking and running event held in northeast Wales, starting from Cilcain Village Hall. Participants can choose from three distances: 32 miles, 24 miles, or 15.5 miles. The routes ascend the scenic Clwydian Hills and follow the Offa's Dyke Path along the ridge, inc..

Moel Famau 24 is a unique 12- or 24-hour endurance event held on the iconic Clwydian Hill of Moel Famau, featuring a challenging 7.2 km loop with 500 meters of ascent per lap. Participants, including solo runners and teams, aim to complete as many laps as possible within their chosen time frame. The..