The 2nd Fun Triathlon Camp in Kashiwazaki will be held at Ishiji Beach on the Japan Sea coast of Niigata Prefecture on the weekend of May 23-24, 2026.. It is being organised by Nagoaka Triathlon Club, Kameda Triathlon Club, Sanjo Triathlon Club, Andy / Sunset Street, and Triathlon in Tokyo. You can read about the 1st Fun Triathlon Camp in 2025 here...
A bigger map can be viewed here.
Triathlon Japan
Triathlon Japan (TRIJ) is the governing body for all races in Japan. It was formerly known as the Japan Triathlon Union (JTU).
1. Triathlon Japan - information on official TRIJ races. Calendars of 2026 Age Group Ranking Races at three distances are available here (scroll down for a list of races and links to entry websites): Sprint, Olympic, and Long Distance
2. TRIJ race entry information - shows races with registration currently open [エントリー受付中]
3. TRIJ ranking system - includes information on ranking races (sprint, Olympic and long distance), how to earn points, and how to qualify for the National Championship races at the end of the season. There are race calendars with links to entry websites.
RACE CALENDARS
1. TRIJ age group ranking races - English calendars of National Championship Series qualifiying races:
All Distances (with links to race websites)
Click for more...
2. Japan Multisport - comprehensive calendar of races in Japan (in English); list of middle and long distance triathlons here.
3. Tokyo Metropolitan Triathlon Union - races organised by JTU Tokyo
4. Kanagawa Triathlon Union - races organised by JTU Kanagawa
RACE ENTRY WEBSITES
1. Lawson Entry (Japanese) - the main race entry site for JTU races
2. Sports Entry (Japanese) - triathlon race calendar and race entry for some of the races in Japan
3. Sports Entry (English) - limited race calendar for races which have entry in English
4. MSPO Entry - race entry site for some races, especially those which don't figure in JTU points ranking
5. KFC - organises triathlons, trail running, OWS races, etc.
6. Tokyo Island Series - includes Niijima and Oshima OD triathlon races
1. Members' Reports - we are compiling race reports from around Japan. If you have a report you would like to share, please send it to Mark.
2. Racecheck - reviews and reports of races from the multisport community; TnT members are encourage to submit reports to help build this resource which was set up by former TnT member, Alex Tanti.
3. Blogs - there are many race reports on TnT members' blogs
1. Tri-K - coaching by our very own Keren Miers; ask him about pricing
2. Fuelling Advice - Ironman nutrition by Arnout Hemel
3. Checklists - here are some triathlon race checklists: Race Weekend Trip (OD); Race Day (OD); Race Weekend Trip (Long distance)
Click for more...
4. Triathlon Race Calculator - calculate your splits, pace, and speed. There are also separate calculators for swim, bike, run and "body".