TRIATHLONS — JAPAN
Triathlons in Japan
We list 70 triathlons across 36 prefectures of Japan, 5 of them upcoming. The next one is Japan Age Group SD/SP Triathlon Championships (2026, Miyazaki) on Nov 15, 2026. Compare dates, entry fees and deadlines to pick your next race.
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UPCOMING
Upcoming races (5)
November 20263
April 20271
July 20271
DATE TBA
Date to be announced (1)
HELD RECENTLY
Held recently — next date pending (64)
Sorted by when they're usually held, soonest first. We update the next date once the organizer announces it.
- Tokyo Umi-no-Mori Special Olympics TriathlonTokyo · Last held Nov 8, 2026
- Tokyo Uminomori AquathlonTokyo · Last held Nov 8, 2026
- Kiso Sanka Junior TriathlonGifu · Last held Mar 21, 2026
- Ishigaki Island TriathlonOkinawa · Last held Apr 12, 2026
- The 14th Nagara River Middle Triathlon 102Gifu · Last held May 31, 2026
- The 13th Ainan Town Iyashi no Sato TriathlonEhime · Last held Jun 5, 2026
- Hokuto Kids AquathlonHokkaido · Last held Jun 7, 2026
- The 5th Tokyo Uminomori TriathlonTokyo · Last held Jun 14, 2026
- Goto Nagasaki International TriathlonNagasaki · Last held Jun 14, 2026
- The 40th Nissan Cup Kanagawa TriathlonKanagawa · Last held Jun 14, 2026
- The 4th Aoyama AquathlonTokyo · Last held Jun 20, 2026
- Fukuyama Kawamachi TriathlonHiroshima · Last held Jun 21, 2026
- Kisarazu TriathlonChiba · Last held Jun 21, 2026
- The 4th Expo '70 Commemorative Park TriathlonOsaka · Last held Jun 21, 2026
- The 38th Gamagori Orange TriathlonAichi · Last held Jun 21, 2026
- Iwate Shizukuishi TriathlonIwate · Last held Jun 21, 2026
- The 27th Aquathlon Splash & Dash in OnouraAichi · Last held Jun 28, 2026
- Swaco Eight Peaks Middle TriathlonNagano · Last held Jun 28, 2026
- The 21st Oiso Long Beach Shonan Family TriathlonKanagawa · Last held Jun 28, 2026
- Lake Hamana TriathlonShizuoka · Last held Jun 28, 2026
- Miyagi International Triathlon: Sendai Bay Shichigahama EventMiyagi · Last held Jun 28, 2026
- Sanport Takamatsu TriathlonKagawa · Last held Jul 1, 2026
- Team Kens Cup Aquathlon at Seibuen Amusement ParkSaitama · Last held Jul 4, 2026
- Meguro Ward Sports Festival Aquathlon CompetitionTokyo · Last held Jul 5, 2026
- Triathlon in TokunoshimaKagoshima · Last held Jul 5, 2026
- Ise-Shima Satoumi TriathlonMie · Last held Jul 5, 2026
- Seki Aji Triathlon FestivalOita · Last held Jul 5, 2026
- Suigo Itako TriathlonIbaraki · Last held Jul 6, 2026
- The 41st Amakusa Takarajima International TriathlonKumamoto · Last held Jul 10, 2026
- Ichikawa Aquathlon CompetitionChiba · Last held Jul 12, 2026
- Junior Triathlon in OmihachimanShiga · Last held Jul 12, 2026
- 2026 Black Lion Triathlon in NagaiYamagata · Last held Jul 12, 2026
- The 2nd Japan Age Group Aquathlon Championships (2026, Tokyo, Uminomori)Tokyo · Last held Jul 12, 2026
- Hiwasa Sea Turtle TriathlonTokushima · Last held Jul 19, 2026
- All Japan Triathlon KaikeTottori · Last held Jul 19, 2026
- The 20th Oigawa Port TriathlonShizuoka · Last held Jul 19, 2026
- The 12th Akashi International AquathlonHyogo · Last held Jul 20, 2026
- The 40th Nagara River International TriathlonGifu · Last held Jul 26, 2026
- The 38th Haskap Triathlon in YufutsuHokkaido · Last held Jul 26, 2026
- Everyone's Challenge Triathlon in Tanba-AogakiHyogo · Last held Jul 26, 2026
- Numazu Senbonhama Triathlon and Triathlon RelayShizuoka · Last held Aug 2, 2026
- Aquathlon at Laguna BeachAichi · Last held Aug 2, 2026
- Takahara-yama TriathlonTochigi · Last held Aug 2, 2026
- The 2nd Tsugaru Jomon TriathlonAomori · Last held Aug 11, 2026
- Kids' Triathlon in Nishio IsshikiAichi · Last held Aug 13, 2026
- The 10th Tojima Triathlon (2026)Ishikawa · Last held Aug 23, 2026
- 1st Utsukushima Triathlon in IwakiFukushima · Last held Aug 23, 2026
- Omotenashi Yamagata Triathlon in ZAOYamagata · Last held Aug 29, 2026
- Irago TriathlonAichi · Last held Sep 5, 2026
- The 30th Japan Long-Distance Triathlon Championships (2026, Sado)Niigata · Last held Sep 6, 2026
- Mt. Fuji Triathlon FujikawaguchikoYamanashi · Last held Sep 6, 2026
- Sado International TriathlonNiigata · Last held Sep 6, 2026
- The 8th Sakura-Orochi Lake Triathlon (2026)Shimane · Last held Sep 8, 2026
- National Challenge KIDS Triathlon Competition at Hot Staff Kawagoe Park (2026)Saitama · Last held Sep 12, 2026
- The 17th Ushio-Ashiya Aquathlon (2026)Hyogo · Last held Sep 13, 2026
- All Kids Triathlon Japan at Moka's Igashira Park (2026)Tochigi · Last held Sep 13, 2026
- KOMATSU All-Japan Ironman Race (2026)Ishikawa · Last held Sep 20, 2026
- Murakami-Sasagawa Nagare International TriathlonNiigata · Last held Sep 26, 2026
- The 14th Green Park Triathlon in KasaiHyogo · Last held Sep 27, 2026
- The 19th Kawasaki Port Triathlon in Higashi-OgishimaKanagawa · Last held Oct 4, 2026
- Chiba City TriathlonChiba · Last held Oct 11, 2026
- Kasumigaura Triathlon FestivalIbaraki · Last held Oct 11, 2026
- Setouchi Shimanami Kaido Imabari-Hakata Island TriathlonEhime · Last held Oct 18, 2026
- 2026 5th Nagara River Middle Triathlon 102 AutumnGifu · Last held Oct 18, 2026