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< United Kingdom

Triathlon Events in the United Kingdom

Run, swim and cycle through British triathlons - these events offer multi-sport fans the perfect full-body challenge. Save your favourites for 2025 to your watchlist with just one click.

28 Running Events found

May 2025

May

10

Sat

Mumbles Triathlon

Mumbles • Wales • United Kingdom

Saturday, 10/05/2025

5 km • 10 km

May

11

Sun

Cheshire Triathlon

Nantwich • England • United Kingdom

Sunday, 11/05/2025

5 km

May

31

Sat

Henley UK Kids Triathlon

Henley-on-Thames • England • United Kingdom

Saturday, 31/05/2025

5 km

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Salomon XA PRO 3D V9 -
-53%

Salomon XA PRO 3D V9
from 69.99 € (-53%)

New Balance DynaSoft Nitrel v6 -
-51%

New Balance DynaSof...
from 48.99 € (-51%)

Hoka Speedgoat 6 -
-50%

Hoka Speedgoat 6
from 79.80 € (-50%)

Salomon Thundercross -
-50%

Salomon Thundercross
from 69.98 € (-50%)

Salomon Aero Glide 2 -
-50%

Salomon Aero Glide 2
from 79.90 € (-50%)

Salomon Aero Blaze 2 -
-50%

Salomon Aero Blaze 2
from 69.90 € (-50%)

June 2025

Jun

01

Sun

Henley Triathlon

Henley-on-Thames • England • United Kingdom

Sunday, 01/06/2025

5 km

Jun

07

Sat

Blenheim Palace Triathlon in Woodstock

Woodstock • England • United Kingdom

07/06/2025 - 08/06/2025

2,9 km • 5,4 km • 10 km • 15 km

Jun

08

Sun

Weymouth Triathlon

Weymouth • England • United Kingdom

Sunday, 08/06/2025

5 km • 10 km

Jun

08

Sun

Slateman Triathlon & Duathlon

Llanberis • Wales • United Kingdom

Sunday, 08/06/2025

5 km

Jun

15

Sun

Fishguard Triathlon

Fishguard • Wales • United Kingdom

Sunday, 15/06/2025

30 mi

Jun

21

Sat

Abersoch Triathlon

Abersoch • Wales • United Kingdom

Saturday, 21/06/2025

5 km • 10 km

Jun

22

Sun

Dartford Bridge Triathlon

Dartford • England • United Kingdom

Sunday, 22/06/2025

5 km • 10 km

Jun

22

Sun

Cardiff Triathlon & Duathlon

Cardiff • Wales • United Kingdom

Sunday, 22/06/2025

5 km

Jun

29

Sun

The Northumbrian Triathlon

Kielder • England • United Kingdom

Sunday, 29/06/2025

July 2025

Jul

13

Sun

Accuro Jersey Triathlon

St Helier • Jersey • United Kingdom

Sunday, 13/07/2025

2,5 km • 5 km • 10 km

Jul

19

Sat

Birmingham Triathlon

Birmingham • England • United Kingdom

Saturday, 19/07/2025

5 km • 10 km

Jul

19

Sat

Belvoir Castle Triathlon in Leicestershire

Grantham • England • United Kingdom

19/07/2025 - 20/07/2025

5 km • 5 km

Jul

26

Sat

Outlaw Nottingham Triathlon

Nottingham • England • United Kingdom

Saturday, 26/07/2025

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ON Cloudrunner 2 Waterproof -
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ON Cloudrunner 2 Wa...
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42 deals from 75.95 €

New Balance Fresh Foam x Vongo v6 -
-31%

New Balance Fresh F...
7 deals from 125.00 €

Salomon Genesis -
-40%

Salomon Genesis
49 deals from 89.99 €

Hoka Challenger 7 -
-25%

Hoka Challenger 7
35 deals from 112.00 €

Brooks Cascadia 17 -
-42%

Brooks Cascadia 17
16 deals from 87.40 €

August 2025

Aug

02

Sat

London T100 Triathlon

London • England • United Kingdom

Saturday, 02/08/2025

5 km • 10 km

Aug

03

Sun

Snowman Triathlon & Duathlon

Wales • United Kingdom

Sunday, 03/08/2025

5 km

Aug

16

Sat

York UK Kids Triathlon

York • England • United Kingdom

Saturday, 16/08/2025

5 km

Aug

17

Sun

York Triathlon

York • England • United Kingdom

Sunday, 17/08/2025

5 km • 10 km

Aug

30

Sat

Staffin Triathlon & 10K Run

Staffin • Scotland • United Kingdom

Saturday, 30/08/2025

5 km

Aug

31

Sun

Shropshire Triathlon

Ellesmere • England • United Kingdom

Sunday, 31/08/2025

5 km • 10 km

September 2025

Sep

14

Sun

North West Triathlon

Nantwich • England • United Kingdom

Sunday, 14/09/2025

5 km

Sep

19

Fri

Saundersfoot Triathlon

Saundersfoot • Wales • United Kingdom

Friday, 19/09/2025

5 km

Sep

21

Sun

Superfeet Sandman Triathlon & Duathlon

Newborough • Wales • United Kingdom

Sunday, 21/09/2025

5 km

Sep

28

Sun

Warwickshire Triathlon

Stratford-upon-Avon • England • United Kingdom

Sunday, 28/09/2025

5 km

Save big with these running shoe deals:

Salomon XA PRO 3D V9 -
-53%

Salomon XA PRO 3D V9
from 69.99 € (-53%)

New Balance DynaSoft Nitrel v6 -
-51%

New Balance DynaSof...
from 48.99 € (-51%)

Hoka Speedgoat 6 -
-50%

Hoka Speedgoat 6
from 79.80 € (-50%)

Salomon Thundercross -
-50%

Salomon Thundercross
from 69.98 € (-50%)

Salomon Aero Glide 2 -
-50%

Salomon Aero Glide 2
from 79.90 € (-50%)

Salomon Aero Blaze 2 -
-50%

Salomon Aero Blaze 2
from 69.90 € (-50%)

April 2026

Early

Apr

2026

Eirias Triathlon & Duathlon

Colwyn Bay • Wales • United Kingdom

Early April 2026

5 km

Mid

Apr

2026

Stratford Triathlon

Stratford-upon-Avon • England • United Kingdom

Mid-April 2026

5 km

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