Kids triathlons in UK
Find kids 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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Select an event for photos, video, route, location, reviews, entry fees and how to enter.

- Sat 19 Jul
- £40-£60
- Sat 19 Jul
- £40-£60
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

- Sat 19 Jul
- £35-£60
- Sat 19 Jul
- £35-£60
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

- Sun 20 Jul
- £50-£60
- Sun 20 Jul
- £50-£60
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

- Sun 20 Jul
- £45-£60
- Sun 20 Jul
- £45-£60
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

- Sun 17 Aug
- £21
- Sun 17 Aug
- £21
ATW Oundle Children’s Triathlon | Tristart
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 8-8
- 50 m pool swimming
- 800 m mountain biking + 0 ft ascent
- 600 m trail running + 3 ft ascent

- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Tristar 1
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 9-10
- 150 m pool swimming
- 2 km mountain biking + 26 ft ascent
- 1.2 km trail running

- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Tristar 2
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 11-12
- 200 m pool swimming
- 4 km mountain biking
- 1.8 km trail running

- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Tristar 3
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 13-14
- 300 m pool swimming
- 6 km mountain biking
- 2.4 km trail running

- Sun 17 Aug
- £29
- Sun 17 Aug
- £29
ATW Oundle Children’s Triathlon | Youth
ATW is the largest triathlon organiser in the UK and is bringing you the Oundle Childrens Triathlon! Ideal for all levels including very first attempts at triathlon.
- Chip timing
- Enter online
- Age 15-16
- 400 m pool swimming
- 8 km mountain biking
- 3 km trail running

- Sat 27 Sep
- £35-£60
- Sat 27 Sep
- £35-£60
Hever Castle Triathlon and Multisport Festival | Triathlon 9-10 years
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family 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

- Sun 28 Sep
- £45-£60
- Sun 28 Sep
- £45-£60
Hever Castle Triathlon and Multisport Festival | Triathlon 13-14 years
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
- Chip timing
- Enter online
- Age 13-14
- 400 m lake swimming
- 8.4 km road cycling
- 2.5 km road running + 69 ft ascent

- Sun 28 Sep
- £40-£60
- Sun 28 Sep
- £40-£60
Hever Castle Triathlon and Multisport Festival | Triathlon 11-12 years
Get the family active in the award-winning castle grounds in a triathlon for all abilities - even beginners then celebrate with friends and family in the festival village.
- Chip timing
- Enter online
- Age 11-12
- 300 m lake swimming
- 4.2 km road cycling
- 1.8 km road running

- Sun 28 Sep
- £50-£60
- Sun 28 Sep
- £50-£60
Hever Castle Triathlon and Multisport Festival | Triathlon 15-16 years
Get active in the award-winning castle grounds in a triathlon for all abilities - even beginners - then celebrate with friends, family and other athletes in the festival village.
- Chip timing
- Enter online
- Age 15-16
- 500 m lake swimming
- 8.4 km road cycling
- 2.5 km road running + 69 ft ascent

- Sun 5 Oct
- £31
- Sun 5 Oct
- £31
Torbay Triathlon Autumn | Tristar 3
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 13-14
- 300 m pool swimming
- 7.5 km road cycling + 0 ft ascent
- 2.5 km multi terrain running + 62 ft ascent

- Sun 5 Oct
- £31
- Sun 5 Oct
- £31
Torbay Triathlon Autumn | Tristar 2
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 11-12
- 200 m pool swimming
- 6 km road cycling
- 1.8 km multi terrain running + 68 ft ascent

- Sun 5 Oct
- £31
- Sun 5 Oct
- £31
Torbay Triathlon Autumn | Novice Kids 11-14
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 11-14
- 200 m pool swimming
- 6 km road cycling
- 1.9 km multi terrain running + 68 ft ascent

- Sun 5 Oct
- £31
- Sun 5 Oct
- £31
Torbay Triathlon Autumn | Tristar 1
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 9-10
- 150 m pool swimming
- 3000 m road cycling
- 1.3 km multi terrain running

- Sun 5 Oct
- £22-£25
- Sun 5 Oct
- £22-£25
Torbay Triathlon Autumn | TriStar Start
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 8-8
- 50 m pool swimming
- 1500 m road cycling
- 650 m multi terrain running

- Sun 5 Oct
- £25
- Sun 5 Oct
- £25
Torbay Triathlon Autumn | Novice Kids 9-10
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 9-10
- 50 m pool swimming
- 1500 m road cycling
- 650 m multi terrain running

- Sun 5 Oct
- £23
- Sun 5 Oct
- £23
Torbay Triathlon Autumn | Mini Triathlon
A totally traffic free festival of triathlon offering both junior and senior distance options on the English Riviera. Pool swimming along with tarmac cycling and a parkland run, with a great medal.
- Chip timing
- Enter online
- Flat
- Traffic free
- Age 5-7
- 25 m pool swimming
- 1500 m road cycling
- 650 m multi terrain running

- Mon 4 May 2026
- £27
- Mon 4 May 2026
- £27
Tavistock Triathlon | TriStar 3
TriStar 3 for children aged 13-14. Pool swim, bike and also run are all mainly on grass in the grounds of Mount Kelly.
- Enter online
- Age 13-14
- 300 m pool swimming
- 6 km gravel riding
- 2.6 km multi terrain running

- Mon 4 May 2026
- £24
- Mon 4 May 2026
- £24
Tavistock Triathlon | TriStar 2
TriStar 2 for children aged 11-12. Pool swim, bike and also run are all mainly on grass in the grounds of Mount Kelly.
- Enter online
- Age 11-12
- 200 m pool swimming
- 3.6 km gravel riding
- 1.95 km multi terrain running

- Mon 4 May 2026
- £22
- Mon 4 May 2026
- £22
Tavistock Triathlon | TriStar 1
TriStar 1 for children age 9-10. Pool swim, bike and also run are all mainly on grass in the grounds of Mount Kelly.
- Enter online
- Age 9-10
- 150 m pool swimming
- 2.4 km gravel riding
- 1.3 km multi terrain running

- Mon 4 May 2026
- £21
- Mon 4 May 2026
- £21
Tavistock Triathlon | Tristar Start
TriStar Start Kids age 8. Pool swim, bike and also run are all mainly on grass in the grounds of Mount Kelly.
- Enter online
- Age 8-8
- 50 m pool swimming
- 1 km gravel riding
- 450 m multi terrain running

- Mon 4 May 2026
- £20
- Mon 4 May 2026
- £20
Tavistock Triathlon | Mini Tri
New! For kids age 5+. Pool swim, bike and also run are all mainly on grass in the grounds of Mount Kelly.
- Enter online
- Age 5-7
- 25 m pool swimming
- 1 km gravel riding
- 450 m multi terrain running