Triathlons in UK in June 2025
Find triathlons near me in UK in June 2025 - 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.
- Sun 15 Jun
- £65
- Sun 15 Jun
- £65
Plymouth Triathlon | Standard
Previously known as Mount Edgcumbe Triathlon, triathletes of all abilities can experience a truly exceptional coastal venue, finishers medal, t-shirt and memorable day out at a fantastic event.
- Chip timing
- Enter online
- Age 17 & over
- 1500 m sea swimming
- 40 km road cycling
- 10 km trail running
- Sun 15 Jun
- £120
- Sun 15 Jun
- £120
Plymouth Triathlon | Middle Distance
Previously known as Mount Edgcumbe Triathlon, triathletes of all abilities can experience a truly exceptional coastal venue, finishers medal, t-shirt and memorable day out at a fantastic event.
- Chip timing
- Enter online
- Age 18 & over
- 1.9 km sea swimming
- 90 km road cycling
- 20 km trail running
- Sun 15 Jun
- £55
- Sun 15 Jun
- £55
Plymouth Triathlon | Sprint
Previously known as Mount Edgcumbe Triathlon, triathletes of all abilities can experience a truly exceptional coastal venue, finishers medal, t-shirt and memorable day out at a fantastic event.
- Chip timing
- Enter online
- Age 15 & over
- 750 m sea swimming
- 20 km road cycling
- 5 km trail running
- Sun 15 Jun
- £78-£99
- Sun 15 Jun
- £78-£99
ATW Stewartby Lake Sprint Triathlon
Located at the Stewartby Sailing Club this venue is perfect for a Sprint Triathlon and was host to a sold-out GB team qualifier event in 2023, with probably the fastest bike leg in the country!
- Enter online
- Flat
- Traffic free
- Age 15 & over
- 750 m lake swimming
- 20 km road cycling
- 5 km road running
- Sun 15 Jun
- £99-£120
- Sun 15 Jun
- £99-£120
ATW Stewartby Lake Standard Triathlon
Located at the Stewartby Sailing Club this venue is perfect for a Standard Triathlon and was host to a sold-out GB team qualifier event in 2023, with probably the fastest bike leg in the country!
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 1500 m lake swimming
- 37 km road cycling
- 10 km road running
- Sat 21 Jun
- £115-£155
- Sat 21 Jun
- £115-£155
Cholmondeley Castle | Sprint Plus Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in a Sprint Plus Triathlon! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 17 & over
- 800 m lake swimming
- 42 km road cycling
- 8 km road running
- Sat 21 Jun
- £100-£150
- Sat 21 Jun
- £100-£150
Cholmondeley Castle | Sprint Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in a Sprint Triathlon! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 15 & over
- 750 m lake swimming
- 28 km road cycling
- 5 km road running
- Sat 21 Jun
- £95-£145
- Sat 21 Jun
- £95-£145
Cholmondeley Castle | Super Sprint Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in a Super Sprint Triathlon! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 15 & over
- 400 m lake swimming
- 28 km road cycling
- 4 km road running
- Sat 21 Jun
- £80-£120
- Sat 21 Jun
- £80-£120
Cholmondeley Castle | Starter Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in a Starter Triathlon! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 15 & over
- 200 m lake swimming
- 14 km road cycling
- 2.5 km road running
- Sat 21 Jun
- £50-£60
- Sat 21 Jun
- £50-£60
Cholmondeley Castle | Triathlon 15-16 years
Get 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 15-16
- 500 m lake swimming
- 8.4 km road cycling
- 2.2 km road running
- Sat 21 Jun
- £40-£60
- Sat 21 Jun
- £40-£60
Cholmondeley 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
- 4.2 km road cycling
- 1.6 km road running
- Sat 21 Jun
- £45-£60
- Sat 21 Jun
- £45-£60
Cholmondeley 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
- 8.4 km road cycling
- 2.2 km road running
- Sat 21 Jun
- £140
- Sat 21 Jun
- £140
Cholmondeley Castle | Friendly Mixed Team Relay Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in the Friendly Mixed Team Relay! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 14 & over
- 250 m lake swimming
- 5 km road cycling
- 1.5 km road running
- Sat 21 Jun
- £140
- Sat 21 Jun
- £140
Cholmondeley Castle | Mixed Team Relay Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in the Mixed Team Relay! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 14 & over
- 250 m lake swimming
- 5 km road cycling
- 1.5 km road running
- Sun 22 Jun
- £249.99
- Entries close soon
- Sun 22 Jun
- £249.99
- Entries close soon
Cardiff Legend (70.3) Triathlon
Situated in the renowned Cardiff Bay, this event stands out as a truly memorable city race. The event village and transition area are on Roald Dahl Plass in front of the Wales Millenium Centre.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 18 & over
- 1900 m lake swimming
- 90 km road cycling + 1059 ft ascent
- 21.8 km road running + 311 ft ascent
- Sun 22 Jun
- £120.99
- Sun 22 Jun
- £120.99
Cardiff Standard Triathlon (World Championship Qualifier)
Situated in the renowned Cardiff Bay, this event stands out as a truly memorable city race. The event village and transition area are on Roald Dahl Plass in front of the Wales Millenium Centre.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 17 & over
- 1500 m lake swimming
- 40 km road cycling + 146 m ascent
- 9 km road running + 111 ft ascent
- Sun 22 Jun
- £120.99-£140.99
- Entries close soon
- Sun 22 Jun
- £120.99-£140.99
- Entries close soon
Cardiff Standard Triathlon (Non Qualifying)
Situated in the renowned Cardiff Bay, this event stands out as a truly memorable city race. The event village and transition area are on Roald Dahl Plass in front of the Wales Millenium Centre.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 18 & over
- 1500 m lake swimming
- 40 km road cycling + 479 ft ascent
- 9 km road running + 111 ft ascent
- Sun 22 Jun
- £245-£295
- Sun 22 Jun
- £245-£295
Cholmondeley Castle | Gauntlet Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in the epic Gauntlet! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 18 & over
- 1.9 km lake swimming
- 84 km road cycling
- 21 km road running
- Sun 22 Jun
- £103.99-£123.99
- Entries close soon
- Sun 22 Jun
- £103.99-£123.99
- Entries close soon
Cardiff Sprint Triathlon
Situated in the renowned Cardiff Bay, this event stands out as a truly memorable city race. The event village and transition area are on Roald Dahl Plass in front of the Wales Millenium Centre.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 18 & over
- 750 m lake swimming
- 20 km road cycling + 239 ft ascent
- 4.7 km road running + 78 ft ascent
- Sun 22 Jun
- £93.99
- Entries close soon
- Sun 22 Jun
- £93.99
- Entries close soon
Cardiff Super Sprint Triathlon
Situated in the renowned Cardiff Bay, this event stands out as a truly memorable city race. The event village and transition area are on Roald Dahl Plass in front of the Wales Millenium Centre.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 18 & over
- 400 m lake swimming
- 10 km road cycling + 111 ft ascent
- 2.5 km road running + 42 ft ascent
- Sun 22 Jun
- £125-£165
- Sun 22 Jun
- £125-£165
Cholmondeley Castle | Olympic Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in the discipline of your choice! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 17 & over
- 1.5 km lake swimming
- 42 km road cycling
- 10.5 km road running
- Sun 22 Jun
- £40-£60
- Sun 22 Jun
- £40-£60
Cholmondeley Castle Triathlon and Multisport Festival | Triathlon 11-12 years
Get active in the beautiful grounds and surrounding area of stunning Cheshire in the discipline of your choice! Bring your friends and celebrate completing your challenge in the festival village.
- Chip timing
- Enter online
- Age 11-12
- 300 m lake swimming
- 4.2 km road cycling
- 1.6 km road running
- Sun 22 Jun
- £35-£60
- Sun 22 Jun
- £35-£60
Cholmondeley 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
- Sat 28 Jun
- £20
- Sat 28 Jun
- £20
ATW Childrens Triathlon Mallory Park | Tristart
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.
- Enter online
- Traffic free
- Age 8-8
- 100 m lake swimming
- 1.5 km road cycling
- 600 m road running
- Sat 28 Jun
- £31
- Sat 28 Jun
- £31
ATW Childrens Triathlon Mallory Park | Tristar 1
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.
- Enter online
- Traffic free
- Age 9-10
- 200 m lake swimming
- 4 km road cycling
- 1.2 km road running