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Triathlons in UK in June 2026

Find triathlons in UK in June 2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
  • Sat 6 Jun
  • £58-£120
Windsor, Buckinghamshire

Dorney Triathlon | June

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

  • Super sprint triathlon
  • Sprint triathlon
  • Olympic triathlon
  • Sprint aquabike
  • Standard aquabike
  • Recycling
  • Beginner-friendly
  • Event village
  • Sustainability policy
  • Age 15 & over
One of the country’s most popular middle distance swim-bike-run events, delivered by triathletes for triathletes, at the beautiful and iconic Grafham Water.
  • Sun 7 Jun
  • £146-£187
Huntingdon, Cambridgeshire

ATW Grafman Middle Distance Triathlon & Aquabike

One of the country’s most popular middle distance swim-bike-run events, delivered by triathletes for triathletes, at the beautiful and iconic Grafham Water.

  • Half Ironman
  • Middle aquabike
  • Recycling
  • Beginner-friendly
  • Event village
  • Park
  • Rural
  • Sustainability policy
  • Age 18 & over
Swim in the clear waters of Blackpool Sands, then take a scenic coastal bike route featuring Devon's flattest road, then run by a stream. Plus chance to camp on the beach!
  • Sun 7 Jun
  • £75-£90
Dartmouth, Devon

Dartmouth Triathlon

Swim in the clear waters of Blackpool Sands, then take a scenic coastal bike route featuring Devon's flattest road, then run by a stream. Plus chance to camp on the beach!

  • Olympic triathlon
  • Sprint triathlon
  • Trees not tees
  • Recycling
  • Beginner-friendly
  • Sustainability policy
  • Age 15 & over
Come join the Pendle Triathlon for this annual event! Set at West Craven Sports Centre in the beautiful Lancashire countryside.
  • Sun 7 Jun
  • £25-£40
Barnoldswick, Lancashire

Pendle Pool Triathlon powered by Fort Vale

Come join the Pendle Triathlon for this annual event! Set at West Craven Sports Centre in the beautiful Lancashire countryside.

  • Super sprint triathlon
  • Sprint triathlon
  • Super sprint duathlon
  • Sprint duathlon
  • Super sprint aquabike
  • + 3 more races
  • Beginner-friendly
  • Event village
  • Age 15 & over
Whichever distance you choose, this triathlon will not fail to impress. With stunning views of Weymouth nature reserve and a true test of stamina, you'll be beaming with pride at the finish line.
  • Sun 14 Jun
  • £80-£195
Weymouth, Dorset

Weymouth WMD Triathlon

Whichever distance you choose, this triathlon will not fail to impress. With stunning views of Weymouth nature reserve and a true test of stamina, you'll be beaming with pride at the finish line.

  • Half Ironman
  • Olympic triathlon
  • Sprint triathlon
  • Beginner-friendly
  • Event village
  • Coast
  • Age 18 & over
The most iconic multi-sport adventure race in Wales, combining a lake swim, brutal mountain climbs and a demanding run through Snowdonia’s dramatic, awe-inspiring landscape.
  • Sun 14 Jun
  • £85.99-£449.99
Caernarfon, Gwynedd

Slateman Triathlon & Duathlon

The most iconic multi-sport adventure race in Wales, combining a lake swim, brutal mountain climbs and a demanding run through Snowdonia’s dramatic, awe-inspiring landscape.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Ironman
  • Standard duathlon 2
  • Carbon offset
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Dogs allowed at venue
  • Music
  • Event village
  • Rural
  • Mountains
  • Free venue entry
  • Sustainability policy
  • Public transport links
  • Age 17 & over
Dive into the Plymouth Triathlon and Plymouth Swim! A stunning sea swim, scenic coastal bike ride, and flat waterfront run offering an unforgettable multisport challenge for athletes of all abilities.
  • Sun 14 Jun
  • £29-£130
Torpoint, Cornwall

Plymouth Triathlon & Plymouth Swim

Dive into the Plymouth Triathlon and Plymouth Swim! A stunning sea swim, scenic coastal bike ride, and flat waterfront run offering an unforgettable multisport challenge for athletes of all abilities.

  • Sprint triathlon
  • Olympic triathlon
  • Half Ironman
  • Sea swim 3
  • Families
  • Trees not tees
  • Beginner-friendly
  • Event village
  • Park
  • Sustainability policy
  • Age 11 & over
Experience a sheltered sea swim, ride scenic coastal roads, and a multi-terrain run to a stunning beach finish in an unforgettable triathlon with electric atmosphere and standout support.
  • Sat 20 Jun
  • £7.50-£110
Pwllheli, Gwynedd

Menai Holiday Cottages Abersoch Triathlon

Experience a sheltered sea swim, ride scenic coastal roads, and a multi-terrain run to a stunning beach finish in an unforgettable triathlon with electric atmosphere and standout support.

  • Sprint triathlon
  • Olympic triathlon
  • Fun run
  • Families
  • Beginner-friendly
  • Music
  • Event village
  • Coast
  • Age 5 & over
Dive into the ATW Stewartby Lake Triathlon and Aquabike – a flat, fast and friendly race offering stunning lake views, smooth roads, and surefire PB potential.
  • Sun 21 Jun
  • £69-£120
Bedford, Bedfordshire

ATW Stewartby Lake Triathlon & Aquabike

Dive into the ATW Stewartby Lake Triathlon and Aquabike – a flat, fast and friendly race offering stunning lake views, smooth roads, and surefire PB potential.

  • Sprint triathlon
  • Olympic triathlon
  • Sprint aquabike
  • Standard aquabike
  • Recycling
  • Beginner-friendly
  • Plastic bottle free
  • Event village
  • Park
  • Sustainability policy
  • Age 15 & over
Take on an exciting coastal triathlon in Southend, featuring a sea swim, fast seafront cycle, and scenic run with fantastic crowd support all the way.
  • Sun 21 Jun
  • £75-£110
Southend-on-Sea, Essex

Southend Triathlon

Take on an exciting coastal triathlon in Southend, featuring a sea swim, fast seafront cycle, and scenic run with fantastic crowd support all the way.

  • Sprint triathlon
  • Olympic triathlon
  • Relay triathlon
  • Standard aquabike
  • Beginner-friendly
  • Event village
  • Coast
  • Age 18 & over
Mallory Park Triathlon Extravaganza: A traffic-free triumph! A thrilling and safe circuit nestled in picturesque surroundings, boasting its own self-contained swimming lake.
  • Sat 27 - Sun 28 Jun
  • £20-£99
Kirkby Mallory, Leicestershire

ATW Triathlon | Mallory Park

Mallory Park Triathlon Extravaganza: A traffic-free triumph! A thrilling and safe circuit nestled in picturesque surroundings, boasting its own self-contained swimming lake.

  • Super sprint triathlon
  • Sprint triathlon
  • Super sprint aquabike
  • Sprint aquabike
  • Novice triathlon
  • Families
  • Beginner-friendly
  • Event village
  • Park
  • All ages
Mallory Park Junior Triathlon: Where dreams take flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.
  • Sat 27 Jun
  • £20-£31
Kirkby Mallory, Leicestershire

ATW Childrens Triathlon Mallory Park

Mallory Park Junior Triathlon: Where dreams take flight! Nurturing the next generation of triathletes, providing a safe and exhilarating environment for children to discover the thrill of multisports.

  • Kids triathlon 5
  • Families
  • Beginner-friendly
  • Event village
  • Park
  • Age 8-16
Race the North Wales coast in a spectacular multi-sport challenge, combining sea air, closed roads and iconic scenery in a fast, friendly triathlon and duathlon setting.
  • Sun 28 Jun
  • £94.99-£141.99
Llandudno, Clwyd

Wild Horse Brewing Co. Llandudno Triathlon & Duathlon

Race the North Wales coast in a spectacular multi-sport challenge, combining sea air, closed roads and iconic scenery in a fast, friendly triathlon and duathlon setting.

  • Sprint triathlon
  • Olympic triathlon
  • Standard duathlon
  • Beginner-friendly
  • Music
  • Event village
  • Age 15 & over
  • Sun 7 Jun
  • £35-£36
Oxfordshire

Vale Tridents Children’s Triathlon

  • Kids triathlon 5
  • Sat 20 Jun
  • £35-£85
Calne, Wiltshire

Bowood House Triathlon

  • Sprint triathlon
  • Super sprint triathlon 2
  • Kids triathlon 3
  • Sat 27 Jun
  • FREE
Caldicot, Gwent

Caldicot Kids Triathlon

  • Kids triathlon 6
  • Sat 27 Jun
  • FREE
Caldicot, Gwent

Caldicot Triathlon

  • Novice triathlon 3
  • Sun 28 Jun
  • £10-£20
Brentwood, Essex

The Brentwood Try-a-Tri

  • Kids triathlon 4
  • Super sprint triathlon
  • Super sprint duathlon 2
  • Novice triathlon 2
  • Kids duathlon

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