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Triathlon Calendar United Kingdom 2025-2026

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Explore the best triathlons in United Kingdom for 2025-2026! Our updated list features 141 exciting races across the country. Find your next race in United Kingdom below and join the running community at these great events! Search for a location or view races near London, Birmingham, Glasgow, Liverpool, Scotland or Wales.

November 2025
Nov
2
Sunday

Devon Duathlon Autumn

Duathlon
Nov
2
Sunday

Seasonal Duathlons

Duathlon
Nov
9
Sunday

Dorney Lake Duathlon

Duathlon
Nov
9
Sunday

Dorney Duathlon

Duathlon
Nov
30
Sunday

Dunham Massey Duathlon

Duathlon
December 2025
Dec
13
Saturday

Dorney Lake Duathlon

Duathlon
Dec
14
Sunday

Halesowen Aquathlon

Aquathlon
Dec
21
Sunday

Woodford Community Duathlon

Duathlon
January 2026
Jan
17
Saturday

The Dirty Devil Duathlon

Duathlon
March 2026
Mar
22
Sunday

Blackpool Aquathlon

Aquathlon
Mar
29
Sunday

Lake District Duathlons - Grasmere

Duathlon
Mar
29
Sunday

Oulton Park Duathlon

Duathlon
April 2026
Apr
12
Sunday

Chirk Triathlon

Triathlon
Apr
12
Sunday

Yorkshire Duathlons at Bramham Park

Duathlon
Apr
12
Sunday

Halesowen Triathlon

Triathlon
Apr
12
Sunday

The Osprey Sprint Triathlon

Triathlon
Apr
19
Sunday

Bamburgh Castle Duathlons Sprint & Standard

Duathlon
Apr
19
Sunday

Southampton Fast Twitch

Triathlon
Apr
26
Sunday

Trident Grantham Triathlon

Backyard Ultra Triathlon
Apr
26
Sunday

Wilmslow Spring Triathlon

Triathlon
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