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.
Filter by month
Filter by place
MapEvent listings
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