Olympic triathlons (standard distance) in UK in September 2025

Find olympic triathlons (standard distance) near me in UK in September 2025 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Standard-distance triathletes to enjoy in an exclusive setting.

Sun 21 Sep
£82-£97

Windsor, Buckinghamshire, UK

Eton Dorney Standard Triathlon

The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Standard-distance triathletes to enjoy in an exclusive setting.

Chip timing
Enter online
Flat
Traffic free
Age 17 & over

1.5 km lake swimming
40 km road cycling
10 km trail running

The Big East and Maldon Triathlon is brought to you by the largest triathlon organiser in the UK! A great experience featuring a tidal river swim.

Sun 21 Sep
£99-£120

Maldon, Essex, UK

ATW Big East & Maldon Standard Triathlon

The Big East and Maldon Triathlon is brought to you by the largest triathlon organiser in the UK! A great experience featuring a tidal river swim.

Enter online
Undulating
Age 17 & over

1500 m river swimming
40 km road cycling + 479 ft ascent
10 km trail running + 86 ft ascent

Take on a multi-activity or distance event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

Sat 27 Sep
£99-£120

Windsor, Buckinghamshire, UK

Dorney Triathlon | September | Standard

Take on a multi-activity or distance event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

Chip timing
Enter online
Flat
PB
Age 17 & over

1500 m lake swimming
40 km road cycling
10 km road running

Great Britain Age Group 2026 Team Qualifier. Get active in the award-winning grounds and surrounding Kent countryside in an Olympic Triathlon in an event for all ability levels then celebrate after!

Sun 28 Sep
£125-£165

Edenbridge, Kent, UK

Hever Castle | Olympic Triathlon

Great Britain Age Group 2026 Team Qualifier. Get active in the award-winning grounds and surrounding Kent countryside in an Olympic Triathlon in an event for all ability levels then celebrate after!

Chip timing
Enter online
Age 17 & over

1.5 km lake swimming
40 km road cycling
10 km road running

Sat 20 Sep

Caernarfon, Gwynedd, UK

The Brutal Extreme Triathlon | The Brutal Bach Standard

0.6 mile lake swimming
28.99 miles road cycling
9.5 miles trail running

Sun 21 Sep

Henley-on-Thames, Buckinghamshire, UK

The One on the River | Henley | Standard Triathlon

1500 m river swimming
54 km road cycling
10 km trail running

Sun 21 Sep

Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Triathlon and Duathlon | Standard Triathlon

1500 m sea swimming
42.3 km road cycling + 1154 ft ascent
9.9 km multi terrain running + 282 ft ascent

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