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Triathlons Found In & Near London

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Triathlons | London | 2025 - 2026

The most comprehensive list of Triathlons in and near London. Discover, compare and book the best London Triathlons!

Find A Race is the UK's most popular Race Marketplace, with over 3 million users a year using our database of over 2,500 events to discover, compare and book their next challenge.

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South East

South East

Race Calendar: Triathlons In & Near London

🚀Boosted

London T100 Triathlon 2025

London
09 Aug 25 - 10 Aug 25
£78.00 - £420.00
🚀Boosted

Dorney Lake Triathlon

Windsor, Berkshire
21 Sep 25
£62.00 - £97.00
4.4

Thorpe Park Sprint Triathlon

Chertsey, Surrey
29 Jun 25
£67.00 - £322.00

Dorney Evening Triathlon

Windsor, Buckinghamshire
02 Jul 25
£60.00 - £80.00
5.0

The FixAddiction Triathlon

Windsor, Buckinghamshire
05 Jul 25
£60.00

Dorney Triathlon

Windsor, Berkshire
13 Jul 25
£60.00 - £101.00
4.6

Dorney Triathlon

Windsor, Berkshire
27 Jul 25
£60.00 - £122.00
4.6

London T100 Triathlon 2025

London
09 Aug 25 - 10 Aug 25
£78.00 - £420.00

Dorney Triathlon

Windsor, Berkshire
09 Aug 25
£60.00 - £101.00
4.6

Dorney Evening Triathlon

Windsor, Buckinghamshire
27 Aug 25
£60.00 - £80.00
5.0

Thorpe Park Sprint Triathlon

Chertsey, Surrey
31 Aug 25
£72.00 - £342.00

The One on the Lake - Dorney

Windsor, Berkshire
07 Sep 25
£25.00 - £75.00

Tri Reigate Sprint Triathlon

Betchworth, Surrey
13 Sep 25
£82.00 - £362.00

Tri Reigate Standard Triathlon

Betchworth, Surrey
14 Sep 25
£92.00 - £407.00

Dorney Lake Triathlon

Windsor, Berkshire
21 Sep 25
£62.00 - £97.00
4.4

Dorney Triathlon

Windsor, Berkshire
27 Sep 25
£60.00 - £122.00
4.6

Hever Castle Triathlon & Multisport

Edenbridge, Kent
27 Sep 25 - 28 Sep 25
£35.00 - £245.00

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