Kujukuri Triathlon or the 99T for short, is one of Japan’s largest triathlons and known to be the “perfect triathlon for beginners” (and those seeking PBs!). With a protected estuary swim and a straight shot on the toll roads used for both the bike and run route, it’s a flat and fast course!
The Kujukuri Triathlon is located in Ichinomiya (Chiba Prefecture) and is easily accessible from Tokyo (just 90 minutes by car). Known as Japan’s second longest beach, the area is known for its year round water activities, such as surfing and jet skiing. Ichinomiya was also the site of the 2020 Tokyo Olympics surfing competition.
Middle Distance (Half Ironman/70.3)
• Swim 1.9KM (1.2 miles)
• Bike 90KM (56 miles)
• Run 21.1KM (13.1 miles)
Standard Distance (Olympic/5150)
• Swim 1.5KM (.93 mile)
• Bike 40KM (25 miles)
• Run 10KM (6.2 miles)
To view the course map, click here (tentative)
For more information about the 2025 Kujukuri Triathlon, click here (Japanese only).
サムライスポーツでの参加申込は外国人参加者を対象としたものです。 日本人の方がエントリーされた場合は無効となり、参加費については、返金事務手数料を差し引いた上でご返金となります。ご了承ください。
Event schedule
- Sat, September 27, 2025 5:30 AM - Parking lots open
- Sat, September 27, 2025 6:00 AM - Athlete check-in at Happy Science University gym
- Sat, September 27, 2025 6:00 AM - Middle distance transition opens
- Sat, September 27, 2025 6:00 AM - Middle distance bike check-in starts
- Sat, September 27, 2025 7:00 AM - Middle distance collect timing chips by swim start
- Sat, September 27, 2025 7:15 AM - Standard distance transition opens
- Sat, September 27, 2025 7:15 AM - Standard distance bike check-in starts
- Sat, September 27, 2025 8:00 AM - Middle distance race starts
- Sat, September 27, 2025 8:00 AM - Standard distance collect timing chips by swim start
- Sat, September 27, 2025 9:00 AM - Standard distance race starts
- Sat, September 27, 2025 10:45 AM - 10k run starts
- Sat, September 27, 2025 4:30 PM - All races cut off
- Sat, September 27, 2025 6:00 PM - Parking lots close
Registration fees
10K Run Closed
Online registration closed-
- Online registration closed
1. Standard Distance (individual) Closed
Online registration closed-
JTU member ID required
- Online registration closed
2. Standard Distance (relay) Closed
Online registration closed-
requires minimum one JTU member
- Online registration closed
3. Middle Distance (individual) Closed
Online registration closed-
JTU member ID required
- Online registration closed
4. Middle Distance (relay) Closed
Online registration closed-
requires minimum one JTU member
- Online registration closed
5. Standard Distance (individual) Closed
Online registration closed-
register without JTU membership
- Online registration closed
6. Standard Distance (relay) Closed
Online registration closed-
for teams without a single JTU member
- Online registration closed
7. Middle Distance (individual) Closed
Online registration closed-
register without JTU membership
- Online registration closed
8. Middle Distance (relay) Closed
Online registration closed-
for teams without a single JTU member
- Online registration closed
Contact information
- Event contact
- Taste of Japan Bike Tour (Samurai Sports)
- Website
- Visit website
