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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 119 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.

February 2025
Feb
1
Saturday

Dorney Lake Duathlon

Duathlon
March 2025
Mar
9
Sunday

Dorney Lake Duathlon

Duathlon
April 2025
Apr
5
Saturday

Torbay Triathlon Relay

Triathlon
Apr
5
Saturday

Dorney Lake Duathlon

Duathlon
Apr
6
Sunday

Torbay Triathlon Spring

Triathlon
Apr
6
Sunday

The Osprey Sprint Triathlon

Triathlon
Apr
13
Sunday

Chirk Triathlon

Triathlon
Apr
13
Sunday

The Wee Tri

Triathlon
Apr
13
Sunday

Kendal Castle Sprint Triathlon

Triathlon
Apr
27
Sunday

Southampton Fast Twitch

Triathlon
Apr
27
Sunday

Boundary Park Tri

Triathlon
Apr
27
Sunday

Harrogate Triathlon

Triathlon
May 2025
May
2-4
Fr - Su

Xterra Weston Park

Cross Triathlon
May
4
Sunday

Oldbury White Horse Sprint Triathlon

Triathlon
May
4
Sunday

ATW St Neots Triathlon

Triathlon
May
5
Monday

TAD TRI

Triathlon
May
5
Monday

Trident Grantham Triathlon

Backyard Ultra Triathlon
May
5
Monday

Tavistock Triathlon

Triathlon
May
11
Sunday

Sunny Hunny Triathlon

Triathlon
May
11
Sunday

HSV Sprint Triathlon

Triathlon
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