Events / Trail Running

Altra Anglesey Trail Half Marathon & 10K 2024

Sister event of the Jones o Gymru Anglesey Half Marathon, the Altra Anglesey Trail Half Marathon & 10km is set in the beautiful surroundings of Newborough Forest, Anglesey.

The course takes you through the trees onto the stunning Llanddwyn Island and onwards to beautiful winding woodland trails which once hosted the Commonwealth Mountain and Ultra Distance Running Championships. You’ll catch glimpses of the Llyn Peninsula and the mountains of Eryri (Snowdonia) amongst other incredible views. With loads of single track forest trails, quiet forest views and sandy running trails, there is something for everyone in this race whether you're an experienced runner, first timer or you’re more familiar with road running.

This was a SOLD OUT event for 2023, so make sure you get your entries in quick!


10 Nov 2024


Newborough Forest

Choose your distance

0168 03 9694

Altra Anglesey Trail Half Marathon & 10K 2024


10 Nov 2024

Run: 10km

Find out more Altra Anglesey Trail 10k 2024
Anglesey Trail Half Marathon Runner in Woods

Altra Anglesey Trail Half Marathon & 10K 2024

Half Marathon

10 Nov 2024

Run: 21.1km

Find out more Altra Anglesey Trail Half Marathon 2024

What's Included

Runner laughing after finishing a race

Lively Event Village

Music, commentary, shopping, food, bag drop and toilets

A runner crosses the Anglesey Trail Half Marathon finish line  with a child

Family Friendly Vibes

Family finishes and plenty to see and do

Marshal wearing an orange high vis jacket

On Course Support

Friendly marshals, signage, energy stations and support vehicles

Anglesey Trail Slate Mockup

Unique Finisher Mementos!

Beautifully designed to reflect our event locations and local history.

Three runners race on Llanddwyn beach in the Anglesey Trail Half Marathon

Spectacular Scenery

Unbeatable views across Eryri (Snowdonia)

Runner crosses the finish line at the Anglesey Half Marathon & 10k event

Professional Timing

Chip timing & live online results

A group of runners ion a forest trail in Newborough Forest, Anglesey, North Wales.

“Thanks for an amazing run today, loved the half marathon. Stunning location and really well organised “

2023 Participant

Working with local communities