Sun 5 Jul 2026
Chelmsford, Essex
Discovery Open Water Junior Triathlon | Tri Star 1
Unique open water, closed road Junior Triathlon. IRC qualifier for London, South East and East.
Sign up for £35
Enter now- Sun 5 Jul 2026
ARU Writtle, Chelmsford
Tri Star 1
10:30
Age 9-10 on 31 Dec 2026
£35
- 150 m lake swimming
- 2.5 km road cycling
- 1.2 km road running
Event overview
This event is part of Discovery Open Water Junior Triathlon.
Event details
- All fitness levels
- Families
- Spectators
Route
- First aid
- Marshals
- Mass start
- Toilets
- Traffic free
- Water stations
Location
- Changing facilities
What's included
- Chip timing
- Eco medal
Sustainability
- Bring your own cup
- Plastic bottle free
- Sustainability policy
Other races at event
- Sun 5 Jul
- #1 of 5
ARU Writtle, Chelmsford
Tristart Duathlon
10:30
Age 7-8
£20
- 400 m road running
- 1.5 km road cycling
- 200 m road running
- Sun 5 Jul
- #2 of 5
ARU Writtle, Chelmsford
Tri Star 3
10:30
Age 13-14
£35
- 350 m lake swimming
- 7.5 km road cycling
- 2.4 km road running
- Sun 5 Jul
- #3 of 5
ARU Writtle, Chelmsford
Tri Star 2
10:30
Age 11-12
£35
- 250 m pool swimming
- 5 km road cycling
- 0.8 km road running
- Sun 5 Jul
- #5 of 5
ARU Writtle, Chelmsford
Youth
10:30
Age 15-16
£35
- 450 m lake swimming
- 7.5 km road cycling
- 3.5 km road running