Osaka Castle Triathlon 2026

Osaka Castle Triathlon 2026

Event Classification: 2026 NTT Triathlon Age Group National Championship Series (Standard & Sprint) / 2026 Osaka Prefectual Triathlon Sports Festival / 35th Osaka Prefectual Triathlon Championship

Date: Sunday, May 31, 2026

Time: 8:00 AM GMT+9

Venue: Main Venue: Osaka Castle Park / Swim: Osaka Castle East Outer Moat

Organizer: Osaka Castle Triathlon Organizers Committee

Members of Organizers Committee: Osaka City, Triathlon Japan, and Osaka Prefectural Triathlon Association (OPTA)

Race Managing Body: Osaka Prefectural Triathlon Association (OPTA)

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: Register through your National Federation.
• Age Group Standard Distance: Triathlon Japan 2026 Registered member, age 18+ on Dec 31, 2026.
• Age Group Sprint Distance: Triathlon Japan 2026 Registered member, age 15+ on Dec 31, 2026.
• Relay Team Sprint Distance: At least one member with Triathlon Japan 2026 one-time team relay membership, age 16+ on Dec 31, 2026.

Registration Fees:

• Age Group Standard Distance Regular: 30,500 JPY
• Age Group Sprint Distance Regular: 21,000 JPY

Note: If entries exceed capacity, draw lots will be used.

Awards:

Awards for top three places in Elite Sprint, Age Group Standard, Age Group Sprint, and Relay Team categories (All Male, All Female, Mixed).