Duathlons in Wales
Find duathlons 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.
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- Sun 14 Jun 2026
- £85.99-£449.99
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
- Sun 28 Jun 2026
- £94.99-£141.99
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
- Sun 26 Jul 2026
- £42.99-£259.99
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
- Sun 27 Sep 2026
Superfeet Sandman Triathlon and Duathlon
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sprint duathlon