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Triathlons in UK
Find triathlons near me in UK for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.
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Event listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sun 14 Sep
Weymouth, Dorset, UK
IRONMAN 70.3 Weymouth
- 1.2 miles sea swimming
- 56 miles road cycling
- 13.1 miles road running
- Sun 14 Sep
Bournemouth, Dorset, UK
Bournemouth International Triathlon | Standard Triathlon
- 1500 m sea swimming
- 40 km road cycling + 1007 ft ascent
- 10 km road running + 232 ft ascent
- Sun 14 Sep
Nantwich, Cheshire, UK
North West Triathlon | Sprint and Relay
- 500 m pool swimming
- 21 km road cycling
- 5 km trail running
- Sun 14 Sep
Nantwich, Cheshire, UK
North West Triathlon | Fun
- 200 m pool swimming
- 21 km road cycling
- 2.5 km trail running
- Sun 14 Sep
Nantwich, Cheshire, UK
North West Triathlon | CRUK Wave and Relay
- 200 m pool swimming
- 21 km road cycling
- 2.5 km trail running
- Sun 14 Sep
Nantwich, Cheshire, UK
North West Triathlon | Super Sprint
- 200 m pool swimming
- 21 km road cycling
- 2.5 km trail 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
- Sat 20 Sep
Caernarfon, Gwynedd, UK
The Brutal Extreme Triathlon | The Brutal Canol Half
- 1.2 miles lake swimming
- 57.98 miles road cycling
- 14.7 miles trail running
- Sat 20 Sep
Caernarfon, Gwynedd, UK
The Brutal Extreme Triathlon | The Brutal Mawr Full
- 2.4 miles lake swimming
- 115.96 miles road cycling
- 25.1 miles trail running
- Sat 20 Sep
Caernarfon, Gwynedd, UK
The Brutal Extreme Triathlon | The Brutal Cawr Double
- 4.8 miles lake swimming
- 231.92 miles road cycling
- 51.1 miles trail running
- Sun 21 Sep
Henley-on-Thames, Buckinghamshire, UK
The One on the River | Henley | Middle Distance Triathlon
- 1900 m river swimming
- 78.5 km road cycling
- 20 km 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 | Legend (70.3) Triathlon
- 1900 m sea swimming
- 93 km road cycling + 3175 ft ascent
- 19.8 km multi terrain running + 570 ft ascent
- Sun 21 Sep
Sudbury, Suffolk, UK
Sudbury Triathlon | Sprint Triathlon
- 400 m pool swimming
- 23 km road cycling
- 5 km trail running
- Sun 21 Sep
Llanfairpwllgwyngyll, Isle of Anglesey, UK
Superfeet Sandman Triathlon and Duathlon | Sprint Triathlon
- 750 m sea swimming
- 22.9 km road cycling + 610 ft ascent
- 5.4 km multi terrain running + 144 ft ascent
- 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
- Sun 21 Sep
Bungay, Suffolk, UK
Autumn Waveney
- 400 m pool swimming
- 20 km road cycling
- 3.2 km road running
- Sun 21 Sep
Henley-on-Thames, Buckinghamshire, UK
The One on the River | Henley | Sprint Triathlon
- 750 m river swimming
- 30 km road cycling
- 5 km trail running
- Sun 21 Sep
Aldeburgh, Suffolk, UK
Aldeburgh Fun Team Relay Triathlon
- 750 m sea swimming
- 22 km road cycling
- 5 km trail running
- Sun 28 Sep
Stratford-upon-Avon, Warwickshire, UK
Warwickshire Triathlon | Sprint and Relay
- 400 m pool swimming
- 18 km road cycling
- 5 km road running
- Sun 28 Sep
Stratford-upon-Avon, Warwickshire, UK
Warwickshire Triathlon | Fun
- 200 m pool swimming
- 18 km road cycling
- 2.5 km road running
- Sun 28 Sep
Stratford-upon-Avon, Warwickshire, UK
Warwickshire Triathlon | CRUK Wave & Relay
- 200 m pool swimming
- 18 km road cycling
- 2.5 km road running
- Sun 28 Sep
Stratford-upon-Avon, Warwickshire, UK
Warwickshire Triathlon | Super Sprint
- 200 m pool swimming
- 18 km road cycling
- 2.5 km road running
- Sat 4 Oct
Llandudno, Clwyd, UK
Llandudno Triathlon & Duathlon | Standard Triathlon
- 1500 m sea swimming
- 34.75 km road cycling + 2979 ft ascent
- 9.4 km road running + 52 ft ascent
- Sat 4 Oct
Llandudno, Clwyd, UK
Llandudno Triathlon & Duathlon | Sprint Triathlon
- 750 m sea swimming
- 17.5 km road cycling + 1568 ft ascent
- 5 km road running + 26 ft ascent