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Events / Triathlon

Harlech Triathlon 2025

The Harlech Sprint Triathlon is a thrilling multisport event set against the stunning backdrop of Harlech Castle and the Eryri (Snowdonia) National Park.

Known for its scenic beauty and demanding course, the event attracts both seasoned triathletes and beginners seeking a unique and memorable experience. This early season Triathlon with its pool swim is one of the best loved on the calendar, be sure to book in quick though as it does often sell out!

This event is an Always Aim High Community Event. Profits from our Community Events go towards supporting amazing local projects, charities and community groups including Harlech Triathlon Club, Community Councils and Mountain Rescue Teams.


06 Apr 2025




Opening Date: 25.05.2024


Choose your distance

Runner at Harlech Triathlon in a Bright Trisuit

Harlech 2025


06 Apr 2025

Pool Swim: 400m

Bike: 21.5km

Run: 5km

Find out more Harlech Sprint Triathlon 2025

What's Included

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Lively Event Village

Music, commentary, shopping and food with a fun and supportive atmosphere

Transition Supporters at Harlech

Inclusive and Friendly

Family finishes and plenty to see and do

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On Course Support

Brilliant marshals, signage and pick up vehicles

Harlech Slate Mockup

Unique Finisher Mementos!

Beautifully designed to reflect our event locations and local history.

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Spectacular location

Castles, coast and a historic town

Castle finish at Harlech Triathlon

Professional Timing

Chip timing & live online results

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"Harlech Triathlon is one of my most favourite events. There is a lovely community spirit about the area over the whole weekend both before and after the event. There is plenty of support around the course and the finish is iconic!"

Rhian Roxburgh 2023

Event Partners

Working with local communities