Xterra Snowdonia Trail Marathon Eryri

Llanberis, United Kingdom • 12 Jul 2025

The XTERRA Snowdonia Trail Marathon Eryri is a premier trail running event set in the breathtaking landscapes of Snowdonia National Park, Wales. Participants can choose from various distances, including an Ultra Marathon, Marathon, Half Marathon, and 10K, all starting and finishing in Llanberis. The event showcases stunning trails, iconic views, and challenging climbs, making it one of the UK's most sought-after trail races. Additionally, the Marathon and Half Marathon serve as qualifiers for the XTERRA Trail Run World Championship, connecting runners globally through a competitive ranking system. The event promises a vibrant atmosphere with on-course support and unique finisher mementos. Visit the organization's website for the most recent information.

Race information

UTMB 50K
57 km
Ultra Marathon (57km)
27 mi
Marathon (27.3 Miles)
12 mi
Half Marathon (12.9 Miles)
10 km
10k
Visit the organization's website for the most recent information.
Trail runs nearby

The Ultra-Trail Snowdonia by UTMB is a renowned trail running event held in the rugged landscapes of North Wales. As part of the UTMB® World Series, it features challenging courses with distances ranging from 25 km to 168 km, including significant elevation gains up to 9,500 meters. The event attrac..

UTMB Index

Snowdonia in a Day is a challenging endurance event held in Snowdonia National Park, Wales, covering approximately 60 km (40 miles) with 4,500 meters of elevation gain. The route follows the Snowdonia Skyline, starting in Conwy in the east and finishing in Nebo in the west, crossing 24 mountains acr..

The Black Mountains 50 is a challenging trail running event held at Longtown Village Hall, Herefordshire, serving as the gateway to the Black Mountains. It features four distances: a 50-mile ultra, 32-mile ultra, marathon, and half marathon, all requiring self-navigation with GPX files and maps prov..

SkyRun Eryri® is Wales' premier skyrunning event held in the iconic Snowdonia (Eryri) region, starting from Rhyd-Ddu. The event features four challenging races ranging from 16 km to 52 km, including the 38 km Snowdon SkyRace and the 52 km 14 Peaks Ultra. Participants experience significant elevation..

UTMB Index

Ultra Wales 50 is a challenging 50-mile mountain and trail race held in Coed-y-Brenin, Southern Snowdonia, Wales. Featuring 2,898 meters of ascent, the course includes iconic landmarks such as Cadair Idris Penygader (893m), Rhinog Fach (712m), Dolgellau, the Barmouth estuary, and the expansive Coed-..

UTMB Index

The Welsh 3000's Ultra Run is a guided mountain running event held in Snowdonia, North Wales, covering the classic 15 peaks over 3,000 feet. Spanning approximately 30 miles (50 km) with 4,000 meters of elevation gain, the route traverses the Carneddau, Glyderau, and Snowdon ranges, including the cha..