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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 38 exciting races across the region. Find your next race in South East (England) below and join the running community at these great events!

February 2025
Feb
1
Saturday

Dorney Lake Duathlon

Duathlon
March 2025
Mar
9
Sunday

Dorney Lake Duathlon

Duathlon
April 2025
Apr
5
Saturday

Dorney Lake Duathlon

Duathlon
Apr
27
Sunday

Southampton Fast Twitch

Triathlon
May 2025
May
11
Sunday

The Huntsman Triathlon

Triathlon
May
25
Sunday

The Bewl Water Triathlon

Triathlon
May
25
Sunday

Dorney Lake Triathlon

Triathlon
May
25
Sunday

Dorney Lake Draft-Legal Triathlon

Triathlon
May
28
Wednesday

Dorney Triathlon

Triathlon
June 2025
Jun
1
Sunday

Hythe Bay Triathlon

Triathlon
Jun
7
Saturday

Dorney Triathlon

Triathlon
Jun
7-8
Sa - Su

Blenheim Palace Triathlon

Triathlon
Jun
7
Saturday

Dorney Lake Triathlon

Triathlon
Jun
15
Sunday

Royal Windsor Triathlon

Triathlon
Jun
22
Sunday

The Bridge Triathlon

Triathlon
Jun
22
Sunday

Box Hill Triathlon

Triathlon
Jun
29
Sunday

Thorpe Park Sprint Triathlon

Triathlon
July 2025
Jul
2
Wednesday

Midweek Dorney Triathlon

Triathlon
Jul
2
Wednesday

Dorney Lake Triathlon

Triathlon
Jul
6
Sunday

The Swashbuckler Triathlon

Triathlon
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