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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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A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Sprint Plus Triathlon! Celebrate in the festival village afterwards.
  • Sat 18 Jul 2026
  • £92-£115
  • Sat 18 Jul 2026
  • £92-£115
Grantham, Leicestershire, UK

Belvoir Castle | Sprint Plus Triathlon

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Sprint Plus Triathlon! Celebrate in the festival village afterwards.

  • Chip timing
  • Enter online
  • Age 17 & over
  • 800 m lake swimming
  • 40 km road cycling
  • 8 km road running
A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Sprint Triathlon! Celebrate in the festival village afterwards.
  • Sat 18 Jul 2026
  • £80-£100
  • Sat 18 Jul 2026
  • £80-£100
Grantham, Leicestershire, UK

Belvoir Castle | Sprint Triathlon

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Sprint Triathlon! Celebrate in the festival village afterwards.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 750 m lake swimming
  • 20 km road cycling + 632 ft ascent
  • 5 km road running + 281 ft ascent
A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Super Sprint Triathlon! Celebrate in the festival village afterwards.
  • Sat 18 Jul 2026
  • £76-£95
  • Sat 18 Jul 2026
  • £76-£95
Grantham, Leicestershire, UK

Belvoir Castle | Super Sprint Triathlon

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Super Sprint Triathlon! Celebrate in the festival village afterwards.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 400 m lake swimming
  • 20 km road cycling + 632 ft ascent
  • 4 km road running + 248 ft ascent
A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Starter Triathon! Celebrate in the festival village afterwards.
  • Sat 18 Jul 2026
  • £64-£80
  • Sat 18 Jul 2026
  • £64-£80
Grantham, Leicestershire, UK

Cholmondeley Castle | Starter Triathlon

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in a Starter Triathon! Celebrate in the festival village afterwards.

  • Chip timing
  • Enter online
  • Age 15 & over
  • 200 m lake swimming
  • 13 km road cycling
  • 2.5 km road running + 196 ft ascent
Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.
  • Sat 18 Jul 2026
  • £32-£40
  • Sat 18 Jul 2026
  • £32-£40
Grantham, Leicestershire, UK

Belvoir Castle | Triathlon 11-12 years

Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 11-12
  • 300 m lake swimming
  • 4 km road cycling
  • 1.6 km road running
Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.
  • Sat 18 Jul 2026
  • £28-£35
  • Sat 18 Jul 2026
  • £28-£35
Grantham, Leicestershire, UK

Belvoir Castle | Triathlon 9-10 years

Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 9-10
  • 200 m lake swimming
  • 4.2 km road cycling
  • 1.3 km road running
A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in the epic Gauntlet Triathlon! Celebrate in the festival village afterwards.
  • Sun 19 Jul 2026
  • £196-£245
  • Sun 19 Jul 2026
  • £196-£245
Grantham, Leicestershire, UK

Belvoir Castle | Gauntlet Triathlon

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in the epic Gauntlet Triathlon! Celebrate in the festival village afterwards.

  • Chip timing
  • Enter online
  • Age 18 & over
  • 1.9 km lake swimming
  • 90 km road cycling + 957 ft ascent
  • 21 km road running
A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in an Olympic Triathlon! Celebrate in the festival village afterwards.
  • Sun 19 Jul 2026
  • £100-£125
  • Sun 19 Jul 2026
  • £100-£125
Grantham, Leicestershire, UK

Belvoir Castle | Olympic Triathlon

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in an Olympic Triathlon! Celebrate in the festival village afterwards.

  • Chip timing
  • Enter online
  • Age 17 & over
  • 1.5 km lake swimming
  • 45 km road cycling + 957 ft ascent
  • 10.5 km road running + 615 ft ascent
Race through the beautiful castle grounds in an event for all levels - even beginners. Recruit your friends to join in too then celebrate afterwards in the festival village.
  • Sun 19 Jul 2026
  • £40-£50
  • Sun 19 Jul 2026
  • £40-£50
Grantham, Leicestershire, UK

Belvoir Castle | Triathlon 15-16 years

Race through the beautiful castle grounds in an event for all levels - even beginners. Recruit your friends to join in too then celebrate afterwards in the festival village.

  • Chip timing
  • Enter online
  • Age 15-16
  • 500 m lake swimming
  • 8 km road cycling
  • 2.4 km road running
Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.
  • Sun 19 Jul 2026
  • £36-£45
  • Sun 19 Jul 2026
  • £36-£45
Grantham, Leicestershire, UK

Belvoir Castle | Triathlon 13-14 years

Get the family active in the beautiful castle grounds in an event for all levels - even beginners. Bring your friends and celebrate completing your challenge in the festival village.

  • Chip timing
  • Enter online
  • Age 13-14
  • 400 m lake swimming
  • 8 km road cycling
  • 2.4 km road running
Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.
  • Sat 8 Aug 2026
  • £250-£270
  • Sat 8 Aug 2026
  • £250-£270
St. Neots, Cambridgeshire, UK

ATW Odyssey Full Distance Triathlon

Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.

  • Enter online
  • Undulating
  • Age 19 & over
  • 3800 m river swimming
  • 180 km road cycling + 3320 ft ascent
  • 42.2 km road running
Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.
  • Sat 8 Aug 2026
  • £130-£150
  • Sat 8 Aug 2026
  • £130-£150
St. Neots, Cambridgeshire, UK

ATW Odyssey Half Distance Triathlon

Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.

  • Enter online
  • Undulating
  • Age 19 & over
  • 1900 m river swimming
  • 90 km road cycling + 1686 ft ascent
  • 21.1 km road running
  • Wed 3 Sep
Carnforth, Lancashire, UK

Capernwray Sprint Tri / Aqua Series - September

  • 500 m lake swimming
  • 17.6 km road cycling
  • 4.3 km road running
  • Sat 6 Sep
Swindon, Wiltshire, UK

Cotswolds Lake 62 End of Season Events | Triathlon

  • 1500 m lake swimming
  • 39 km road cycling + 741 ft ascent
  • 10.5 km trail running + 23 ft ascent
  • Sun 7 Sep
Bexhill-on-Sea, East Sussex, UK

The 1066 Triathlon | Sprint Triathlon

  • 750 m sea swimming
  • 20 km road cycling + 264 ft ascent
  • 5 km road running
  • Sun 7 Sep
Bexhill-on-Sea, East Sussex, UK

The 1066 Triathlon | Standard Triathlon

  • 1500 m sea swimming
  • 40 km road cycling + 955 ft ascent
  • 10 km road running
  • Sun 7 Sep
Bexhill-on-Sea, East Sussex, UK

The 1066 Triathlon | Middle Distance Triathlon

  • 1900 m sea swimming
  • 80 km road cycling + 1910 ft ascent
  • 21 km road running
  • Sun 7 Sep
Bala, Gwynedd, UK

Rawson Group Triathlon Y Bala | Sprint Triathlon

  • 750 m lake swimming
  • 20 km road cycling + 587 ft ascent
  • 5 km road running + 160 ft ascent
  • Sun 7 Sep
Bala, Gwynedd, UK

Rawson Group Triathlon Y Bala | Standard Triathlon

  • 1500 km lake swimming
  • 37 km road cycling + 1181 ft ascent
  • 10 km road running + 255 ft ascent
  • Sun 7 Sep
Isle of Man, UK

Manx Tri Club Triathlon Championships | Sprint Distance (400m swim)

  • 400 m lake swimming
  • 20 km road cycling
  • 5 km road running
  • Sun 7 Sep
Isle of Man, UK

Manx Tri Club Triathlon Championships | Sprint Distance (750m swim)

  • 750 m lake swimming
  • 20 km road cycling
  • 5 km road running
  • Sun 7 Sep
Isle of Man, UK

Manx Tri Club Triathlon Championships | Standard Distance

  • 1500 m lake swimming
  • 40 km road cycling
  • 10 km road running
  • Sun 7 Sep
Swindon, Wiltshire, UK

Cotswolds Individual Team Relay Super Sprint Triathlon | Team Triathlon

  • 300 m lake swimming
  • 8 km road cycling + 105 ft ascent
  • 1.5 km trail running + 23 ft ascent
  • Sun 7 Sep
Swindon, Wiltshire, UK

Cotswolds Individual Team Relay Super Sprint Triathlon | Individual Triathlon

  • 300 m lake swimming
  • 8 km road cycling + 105 ft ascent
  • 1.5 km trail running + 23 ft ascent
  • Sun 14 Sep
Bournemouth, Dorset, UK

Bournemouth International Triathlon | Sprint Triathlon

  • 750 m sea swimming
  • 20 km road cycling + 596 ft ascent
  • 5 km road running + 113 ft ascent

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