The 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!
CHOOSE YOUR DISTANCE
10K
RUN: 10KM
HALF MARATHON
RUN: 21.1KM
WHAT’S INCLUDED
LIVELY EVENT VILLAGE
Music, commentary, shopping, food, bag drop and toilets
FAMILY-FRIENDLY VIBES
Family finishes and plenty to see and do
ON COURSE SUPPORT
Friendly marshals, signage, energy stations and support vehicles
UNIQUE FINISHER MEMENTOS!
Beautifully designed to reflect our event locations and local history.
SPECTACULAR SCENERY
Unbeatable views across Eryri (Snowdonia)
PROFESSIONAL TIMING
Chip timing & live online results




