Anglesey Trail Half Marathon

Llanfairpwllgwyngyll, United Kingdom • 9 Nov 2025

The Anglesey Trail Half Marathon & 10k is a scenic trail running event held in Newborough Forest and Ynys Llanddwyn, Anglesey, North Wales. The race features two distances: a 10k and a half marathon (21.1 km), taking runners through beautiful woodland trails, sandy paths, and onto Llanddwyn Island. Participants enjoy stunning views of the Llyn Peninsula and Snowdonia mountains (Eryri).

The course includes single-track forest trails and quiet natural surroundings, suitable for all levels from beginners to experienced trail runners. The event is family-friendly, professionally organized, and supports Alder Hey Children's Charity. It offers on-course support, lively event village amenities, and unique finisher mementos. Visit the organization's website for the most recent information.

Race information

13 mi
Half Marathon
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

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..

The Pen Llyn Ultra Summer Edition is a challenging ultramarathon event held in North Wales, featuring distances of 50, 75, and 100 miles within specified time limits. Participants can test their endurance along scenic coastal and rural trails, with the event emphasizing both personal achievement and..