Anglesey Trail Half Marathon

Llanfairpwllgwyngyll, United Kingdom • 9 Nov 2025

Set in Newborough Forest and along Traeth Llanddwyn on Anglesey, the Anglesey Trail Half Marathon & 10k offers forest and coastal routes through trees, beaches, and winding woodland trails. Runners tackle single-track forest trails with views across the Llyn Peninsula and Snowdonia, with sections that pass Llanddwyn Island’s scenic surroundings. The event features a lively village atmosphere, on-course support, marshals, energy stations, chip timing with live results, and beautifully designed finisher mementos reflecting local history. It supports Alder Hey Children's Charity, with fundraising options and a free-running shirt for higher sponsorship. A bilingual, sister event to the Anglesey Half Marathon, 2025 edition. Visit the organization's website for the most recent information.

Race information

21 km
Half Marathon
10 km
10k
Visit the organization's website for the most recent information.
Trail runs nearby

Ring O' Fire is a coastal ultra marathon event held on the island of Ynys Môn, featuring challenging endurance races such as the Ring O’ Fire 130 and the Firelighter 50. These races offer participants the ultimate coastal endurance challenge, traversing scenic and rugged coastal terrain. The event e..

Dragon’s Back Race® is a legendary six-day, multi-stage ultra running journey along the spine of Wales. The Full Dragon covers about 380km with 16,400m of ascent, starting at Conwy Castle and finishing at Cardiff Castle. Run every September, the route traverses dramatic Welsh terrain across six days..

UTMB Index

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...

Yr Wyddfa Ultra 50 is a 45-mile mountain ultramarathon in Snowdonia National Park (Eryri), with around 3,254 metres of ascent and space for up to 500 entrants. The route starts and finishes at Cae Llan/Village Green, Betws-y-Coed, following the Snowdonia Slate Trail from the Swallow Falls area up to..

UTMB Index

The Snowdonia Mountain Skills Weekend 2025 is a trail running event held in the Nantlle Valley within Snowdonia National Park, UK. Hosted by Running Adventures, the weekend focuses on advanced trail runners aiming to enhance their mountain running skills and safety knowledge. Participants experience..

The Brutal Extreme Triathlon takes place in Llanberis, North Wales, starting at Lake Padarn. The event offers Canol (Half), Mawr (Full), Cawr (Double), and Triple distances, with a 1.25 km swim in Llyn Padarn, a 28-mile bike loop through dramatic Welsh scenery, and lake laps totaling about 5 miles,..