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Triathlons in UK in September 2024

Find triathlons near me in UK in September 2024 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Click an event for full event details, location, route, sustainability, what's included and how to enter.

Join Aviemore Triathlon in the beautiful Cairngorms and enjoy an open water swim in the cool, calm waters of Loch Morlich and enjoy mountain biking and running on the trails of Glenmore Forest.
  • Sun 15 Sep
  • £66-£96
  • Sun 15 Sep
  • £66-£96
Aviemore, Highland, UK

Aviemore Triathlon

Join Aviemore Triathlon in the beautiful Cairngorms and enjoy an open water swim in the cool, calm waters of Loch Morlich and enjoy mountain biking and running on the trails of Glenmore Forest.

  • Recycling
  • Newcomers
  • Event village
  • Sustainability policy
  • Age 15 & over
  • Sprint triathlon
  • Olympic triathlon
Triathlons at Dawlish Warren, a safe and supported environment for sea swimming, with a range of triathlon distances to offer a great challenge in a scenic location.
  • Sun 22 Sep
  • £42-£61
  • Sun 22 Sep
  • £42-£61
Dawlish, Devon, UK

Dawlish Triathlon

Triathlons at Dawlish Warren, a safe and supported environment for sea swimming, with a range of triathlon distances to offer a great challenge in a scenic location.

  • Families
  • Trees not tees
  • Newcomers
  • Coast
  • Sustainability policy
  • Plastic-free event
  • Age 15 & over
  • Super sprint triathlon
  • Sprint triathlon
  • Sprint aquathlon
Taking place across the scenic Thames Valley area with routes going through Culden Faw Estate. Swim the river, cycle the hilly open roads, run through the trail paths enjoying great views.
  • Sun 22 Sep
  • £25-£110
  • Sun 22 Sep
  • £25-£110
Henley-on-Thames, Buckinghamshire, UK

The One on the River | Henley

Taking place across the scenic Thames Valley area with routes going through Culden Faw Estate. Swim the river, cycle the hilly open roads, run through the trail paths enjoying great views.

  • Recycling
  • Newcomers
  • Event village
  • Park
  • Sustainability policy
  • Age 17 & over
  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sprint aquabike
  • Standard aquabike
  • + 4 more races
An award-winning triathlon on the incredible, unspoilt Hebridean Island of Kerrera, off Scotland's stunning west coast with the accessible marina and its facilities as the main hub.
  • Sat 28 - Sun 29 Sep
  • £64-£89
  • Sat 28 - Sun 29 Sep
  • £64-£89
Oban, Argyll and Bute, UK

Craggy Island Triathlon

An award-winning triathlon on the incredible, unspoilt Hebridean Island of Kerrera, off Scotland's stunning west coast with the accessible marina and its facilities as the main hub.

  • Newcomers
  • Event village
  • Rural
  • Coast
  • Free venue entry
  • Sustainability policy
  • Public transport links
  • Plastic-free event
  • Age 16 & over
  • Sprint triathlon 2
Race through the beautiful grounds and surrounding area of Hever Castle on an event of your choice from starter to elite then celebrate with friends and family in the festival village.
  • Sat 28 - Sun 29 Sep
  • £28-£295
  • Sat 28 - Sun 29 Sep
  • £28-£295
Edenbridge, Kent, UK

Hever Castle Triathlon and Multisport Festival

Race through the beautiful grounds and surrounding area of Hever Castle on an event of your choice from starter to elite then celebrate with friends and family in the festival village.

  • Families
  • Recycling
  • Newcomers
  • Event village
  • Park
  • Rural
  • Sustainability policy
  • Age 9 & over
  • Half Ironman
  • Olympic triathlon
  • Sprint triathlon 2
  • Super sprint triathlon
  • Novice triathlon
  • + 16 more races
  • Sun 8 Sep
Heywood, Greater Manchester, UK

Trident Triathlon Challenge

  • 400 m pool swimming
  • 15.5 km road cycling
  • 5 km trail running
  • Sun 8 Sep
Daventry, Northamptonshire, UK

Viridian Daventry Triathlon

  • 400 m pool swimming
  • 20 km road cycling
  • 5 km road running
  • Sun 8 Sep
Neath, West Glamorgan, UK

Neath Valley Triathlon

  • 400 m pool swimming
  • 22 km road cycling
  • 3 km road running
  • Sun 8 Sep
Horsham, West Sussex, UK

Southwater Triathlon Relays

  • 400 m lake swimming
  • 18.5 km road cycling
  • 3.8 km road running
  • Sun 8 Sep
Betchworth, Surrey, UK

Tri Reigate Sprint Triathlon

  • 750 m lake swimming
  • 19 km road cycling
  • 5 km road running
  • Sun 8 Sep
Bideford, Devon, UK

Bideford Triathlon

  • 500 m river swimming
  • 23 km road cycling
  • 5 km road running
  • Wed 11 Sep
Cromhall, Gloucestershire, UK

South West Maritime Triathlon Series - Race 5

  • Sprint triathlon
  • Sprint duathlon
  • Sat 14 - Sun 15 Sep
Llanfairpwllgwyngyll, Isle of Anglesey, UK

Superfeet Sandman Triathlon and Duathlon

  • Sprint triathlon 2
  • Olympic triathlon 2
  • Half Ironman
  • Sprint duathlon
  • Standard duathlon
  • Sun 15 Sep
Chester, Cheshire, UK

Deva Junior Triathlon

  • Kids triathlon 5
  • Super sprint triathlon
  • Sprint triathlon
  • Sun 15 Sep
Bognor Regis, West Sussex, UK

The Bognor Charity Muliti-sport Festival

  • Novice triathlon 2
  • Kids triathlon 6
  • Kids duathlon 2
  • Fun run 2
  • Kids aquathlon 2
  • + 2 more races
  • Sun 15 Sep
Cheltenham, Gloucestershire, UK

Cheltenham Tri Festival

  • Super sprint triathlon
  • Sprint triathlon
  • Olympic triathlon
  • Sun 15 Sep
Woking, Surrey, UK

Woking Triathlon - Autumn

  • Kids aquathlon 5
  • Sprint aquathlon
  • Super sprint triathlon
  • Sprint triathlon
  • Sun 15 Sep
Huntingdon, Cambridgeshire, UK

ATW Grafham Triathlon

  • Sprint triathlon
  • Olympic triathlon
  • Standard aquabike
  • Sun 15 Sep
Stowmarket, Suffolk, UK

Stowmarket HaverSports West Suffolk Triathlon

  • Sprint triathlon 2
  • Sprint duathlon 2
  • Sun 15 Sep
Chesham, Buckinghamshire, UK

Junior Para Triathlon

  • Kids triathlon 5
  • Sun 15 Sep
Langport, Somerset, UK

The Langport Triathlon

  • 400 m pool swimming
  • 22.5 km road cycling
  • 5 km xc running
  • Sun 15 Sep
Weymouth, Dorset, UK

IRONMAN 70.3 Weymouth

  • 1.2 miles sea swimming
  • 56 miles road cycling
  • 13.1 miles road running
  • Sun 15 Sep
Derby, Derbyshire, UK

Derby Triathlon

  • 400 m pool swimming
  • 18 km road cycling
  • 5 km road running
  • Sun 15 Sep
Aldeburgh, Suffolk, UK

Aldeburgh Fun Team Relay Triathlon

  • 750 m sea swimming
  • 22 km road cycling
  • 5 km trail running
  • Fri 20 Sep
Saundersfoot, Pembrokeshire, UK

Saundersfoot Triathlon

  • 750 m sea swimming
  • 20 km road cycling
  • 5 km multi terrain running

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