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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 12 exciting races across the region. Find your next race in Wales below and join the running community at these great events!

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
June 2026
Jun
14
Sunday

Slateman Triathlon & Duathlon

Triathlon Duathlon
Jun
16
Tuesday

The Bay Aquathlon Series

Aquathlon
July 2026
Jul
5
Sunday

North Wales Triathlon

Triathlon
Jul
12
Sunday

Ironman 70.3 Swansea

Triathlon
Jul
16
Thursday

The Bay Aquathlon Series

Aquathlon
August 2026
Aug
27
Thursday

The Bay Aquathlon Series

Aquathlon
September 2026
Sep
6
Sunday

Rawson Group Triathlon y Bala

Triathlon
Sep
11
Friday

Saundersfoot Triathlon

Triathlon
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