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Triathlon Calendar Wales 2025-2026

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Explore the best triathlons in Wales for 2025-2026! Our updated list features 10 exciting races across the region. Find your next race in Wales below and join the running community at these great events!

September 2025
Sep
6
Saturday

Montgomery Canal Marathon Triathlon

Triathlon
Sep
7
Sunday

Rawson Group Triathlon y Bala

Triathlon
Sep
21
Sunday

Ironman Wales

Triathlon
Sep
21
Sunday

Superfeet Sandman Triathlon & Duathlon

Triathlon
October 2025
Oct
4
Saturday

Wild Horse Brewing Co. Llandudno Triathlon & Duathlon

Triathlon
April 2026
Apr
12
Sunday

Chirk Triathlon

Triathlon
May 2026
May
16
Saturday

South Wales 26 MTB

Cross Triathlon
May
16
Saturday

South Wales 26 ROAD

Triathlon
July 2026
Jul
5
Sunday

North Wales Triathlon

Triathlon
Jul
12
Sunday

Ironman 70.3 Swansea

Triathlon
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