Triathlons in Wales

Find triathlons in Wales in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

Filter by date

Filter by place

Map

Event listings

Select an event for photos, video, route, location, reviews, entry fees and how to enter.

The totally unique ROC format, from Abersoch Bay to the top of Wales’ highest mountain and back. Swim, Bike, Mountain, Bike, Run; THE ROC WALES is triathlon - tough and redefined.

Sat 9 May 2026
£250-£270

Pwllheli, Gwynedd, UK

THE ROC WALES

The totally unique ROC format, from Abersoch Bay to the top of Wales’ highest mountain and back. Swim, Bike, Mountain, Bike, Run; THE ROC WALES is triathlon - tough and redefined.

Recycling
Plastic bottle free
Entertainment
Music
Chip timing
Enter online
Hilly
Mountainous
Event village
Event expo
Coast
Mountains
Sustainability policy
Plastic-free event
Age 18 & over

1.5 km sea swimming
100 km road cycling
13 km multi terrain running + 3330 ft ascent

The most iconic multi-sport adventure race in Wales, combining a lake swim, brutal mountain climbs and a demanding run through Snowdonia’s dramatic, awe-inspiring landscape.

Sun 14 Jun 2026
£85.99-£449.99

Caernarfon, Gwynedd, UK

Slateman Triathlon & Duathlon

The most iconic multi-sport adventure race in Wales, combining a lake swim, brutal mountain climbs and a demanding run through Snowdonia’s dramatic, awe-inspiring landscape.

Carbon offset
Recycling
Beginner-friendly
Plastic bottle free
Dogs allowed at venue
Music
Event village
Rural
Mountains
Free venue entry
Sustainability policy
Public transport links
Age 17 & over

Sprint triathlon
Olympic triathlon
Half Ironman
Ironman
Standard duathlon

Race the North Wales coast in a spectacular multi-sport challenge, combining sea air, closed roads and iconic scenery in a fast, friendly triathlon and duathlon setting.

Sun 28 Jun 2026
£94.99-£141.99

Llandudno, Clwyd, UK

Wild Horse Brewing Co. Llandudno Triathlon & Duathlon

Race the North Wales coast in a spectacular multi-sport challenge, combining sea air, closed roads and iconic scenery in a fast, friendly triathlon and duathlon setting.

Beginner-friendly
Music
Event village
Age 15 & over

Sprint triathlon
Olympic triathlon
Standard duathlon

Awarded the Event of the Year (2021) in the Welsh Triathlon Awards, The Snowman is well known as the toughest multi-terrain triathlon and duathlon in the UK. Not for the faint-hearted.

Sun 26 Jul 2026
£42.99-£259.99

Betws-y-Coed, Clwyd, UK

Snowman Triathlon, Duathlon and Swims

Awarded the Event of the Year (2021) in the Welsh Triathlon Awards, The Snowman is well known as the toughest multi-terrain triathlon and duathlon in the UK. Not for the faint-hearted.

Beginner-friendly
Music
Event village
Age 17 & over

Sprint triathlon
Olympic triathlon
Half Ironman
Sprint duathlon
Lake swim 2

Start with a water swim in beautiful Llyn Tegid against a mountain backdrop, then push through scenic bike and run routes on fully closed roads around Bala, North Wales.

Sun 6 Sep 2026
£98.99-£259.99

Bala, Gwynedd, UK

Triathlon Y Bala

Start with a water swim in beautiful Llyn Tegid against a mountain backdrop, then push through scenic bike and run routes on fully closed roads around Bala, North Wales.

Carbon offset
Recycling
Beginner-friendly
Plastic bottle free
Dogs allowed at venue
Music
Event village
Rural
Mountains
Free venue entry
Sustainability policy
Age 15 & over

Sprint triathlon
Olympic triathlon
Half Ironman

Sun 27 Sep 2026

Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Triathlon and Duathlon

Sprint triathlon
Olympic triathlon
Half Ironman
Sprint duathlon

Other UK events

Search options

Back to search options