EVENT DETAILS
Event Name
Osaka Castle Triathlon 2026
Event Classification
2026 NTT Triathlon Age Group National Championship Series(Standard・Sprint) /2026Osaka Prefectual Triathlon Sports Festival / 35th Osaka Prefectual Triathlon Championship
Date
Sunday May 31st, 2026
Venue
Main Venue:Osaka Castle Park / Swim: Osaka Castle East Outer Moat
Organizer
Osaka Castle Triathlon Organizers Committee
Members of Organizers Committee
Osaka City, Japan Triathlon Japan and Osaka Prefectural Triathlon Association (OPTA)
Race Managing Body
Osaka Prefectural Triathlon Association (OPTA)
Special Partner
TBA
Sponsors
TBA
Event Distances
Elite Sprint Distance (Swim 0.75km/Bike 20km/ Run 5km)
Age Group Standard Distance (Swim 1.5km/Bike 37.02km/ Run 10km)
Age Group Sprint Distance (Swim 0.75km/Bike 18.69km/ Run 5km)
Relay Team Sprint Distance (Swim 0.75km/Bike 18.69km/ Run 5km)
Cut-Off Times
Standard Distance:
Swim finish 45 min / Bike finish 2 hrs and 30 min / Total finish 3 hrs and 40 min after the swim start.
Sprint Distance:
Swim finish 30 min / Bike finish 1 hrs and 25 min / Total finish 2 hrs and 5 min after the swim start.
Qualifications
Elite Sprint Distance:
In order to participate, you have to register through your own National Federation. Please contact your own National Federation for more information.
Each National Federation is establishing its own qualification system for athletes to compete at the Elite race.
Each National Federation is establishing its own qualification system for athletes to compete at the Elite race.
Age Group Standard Distance:
- Triathlon Japan 2026 Registered member.(One day registered member of OVERSEAS participants)
- Age must be 18 or older on December 31st, 2026.
- Capable of finishing in less than the cut-off time.
- Wearing a wetsuit during the swim is mandatory.
Age Group Sprint Distance:
- Triathlon Japan 2026 Registered member.(One day registered member of OVERSEAS participants)
- Age must be 15 or older on December 31st, 2026.
- Capable of finishing in less than the cut-off time.
Registration Fees
Age Group Standard Distance
Regular:
30,500 JPY(including a 1,000 JPY one-day membership fee)
Age Group Sprint Distance
Regular:
21,000 JPY(including a 1,000 JPY one-day membership fee)
Please small note
If entry exceed the number of capacities, we will use draw lots to decide.
Awards
Elite Sprint Distance:
The top three places for both male and female.
Age Group Standard Distance:
All male and female TOP THREE athletes. The TOP THREE places for the male and female athletes in each age group.
Age Group Sprint Distance:
All male and female TOP THREE athletes.
Relay Team Sprint Distance:
The TOP THREE relay teams for the following categories: All Male, All Female, and Mixed.