Snowdonia Trail Half Marathon 2026

This is one tough Half Marathon with over 1192m of ascent most of which is up Wales’ highest peak.

The hills start almost immediately as you climb up through Llanberis and then Maesgwm, also known as Telegraph Valley. Turning left onto the Snowdon Ranger Path you have a further steep climb up before crossing the railway, reaching the Finger Stone and starting your descent down the Llanberis Path. The views, all the way to Anglesey, are incredible, but don’t get complacent you haven’t finished yet!

Once back down at the road in Llanberis you are diverted through the woods past Dolbadarn Castle with the sting in the tail being the final climb up the infamous Zig Zag path and into the quarries. Reaching the top of Vivian Quarry you’ll be able to see the event village and the finish line down below and better yet, it’s pretty much all downhill to the finish from here.

When you join Team Grassroots, you will benefit from:

• No joining fee to register.
• Free Branded Vest, so you can proudly represent people affected by suicide whilst training.
• Our Fundraising Hub, which includes a range of tips, inspirational ideas, and advice.
• Press release templates
• Social media templates
• Regular check ins, and progress updates.
• Access to a strong online social community of Team Grassroots Members.
• Access to a free mental health and suicide prevention training session.

Charity Place Fundraising Target: £350

Registration Fee: £0