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Triathlon Calendar South East (England) 2025-2026

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Explore the best triathlons in South East (England) for 2025-2026! Our updated list features 52 exciting races across the region. Find your next race in South East (England) below and join the running community at these great events!

April 2025
Apr
27
Sunday

Southampton Fast Twitch

Triathlon
Apr
27
Sunday

Woking Spring Triathlon

Triathlon
May 2025
May
7
Wednesday

Midweek Duathlon

Duathlon
May
10
Saturday

Chapel Tri Aquathlon

Aquathlon
May
11
Sunday

The Huntsman Triathlon

Triathlon
May - Sep
13-9
Tu - Tu

Midweek Aquathlon

Aquathlon
May
18
Sunday

Arundel Lido Triathlon

Triathlon
May
18
Sunday

Banbury Triathlon

Triathlon
May
25
Sunday

Dorney Lake Draft-Legal Triathlon

Triathlon
May
25
Sunday

Dorney Lake Triathlon

Triathlon
May
25
Sunday

The Bewl Water Triathlon

Triathlon
May
28
Wednesday

Dorney Triathlon

Triathlon
June 2025
Jun
1
Sunday

Hythe Bay Triathlon

Triathlon
Jun
7
Saturday

Dorney Triathlon

Triathlon
Jun
7
Saturday

Dorney Lake Triathlon

Triathlon
Jun
15
Sunday

Royal Windsor Triathlon

Triathlon
Jun
15
Sunday

Beachborough & Brackley Triathlon

Triathlon
Jun
20
Friday

Bayside Sea Swim Triathlon

Triathlon
Jun
22
Sunday

The Bridge Triathlon

Triathlon
Jun
22
Sunday

Box Hill Triathlon

Triathlon
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