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Race calendarMarathon, trail, triathlon and HYROX dates (92 races)

Upcoming races in Japan, in date order. I only list dates confirmed on each race's official site (checked Oct 13, 2026). Races whose next date hasn't been announced are left out.

October 2026

Oct 25 (Sun)Entry not confirmedMarathonYokohama Marathon 2026Kanagawa · 42.195km · limit 6h30m (8:30 start, 15:00 end)Find lodging in Kanagawa (Rakuten Travel, ad)
Oct 25 (Sun)Entry closedMarathon11th Mito Komon Manyu MarathonIbaraki · 42.195km · limit 6hEntry: closed (deadline was Jun 30)Find lodging in Ibaraki (Rakuten Travel, ad)
Oct 25 (Sun)Entry closedTriathlonAutumn Leaves Challenge Triathlon & Duathlon Festival in Kazo (2026)Saitama · A (swim2km, bike64.8km, run15km) / B (swim1.5km, bike43.2km, run10km) / C (swim0.5km, bike21.6km, run2.5km)Entry: closedFind lodging in Saitama (Rakuten Travel, ad)
Oct 25 (Sun)Entry not confirmedMarathonKanazawa Marathon 2026Ishikawa · 42.195km · limit 7hFind lodging in Ishikawa (Rakuten Travel, ad)
Oct 30 (Fri) – Nov 1Entry closedTrail running6th LAKE BIWA 100 2026Shiga, Mie · 100mile (170km) · limit 52hEntry: closedFind lodging in Shiga (Rakuten Travel, ad)
Oct 31 (Sat) – Nov 1Entry closedTrail runningOSJ KAMI100Hyogo · 100K / 70K / 30K · limit 25h (100K) / 15h30m (70K) / 9h (30K)Entry: closedFind lodging in Hyogo (Rakuten Travel, ad)

November 2026

Nov 1 (Sun)Entry closedTrail runningSEA ALPS TRAIL JOURNEY 2026Iwate · 49km · limit 11h30mEntry: closedFind lodging in Iwate (Rakuten Travel, ad)
Nov 1 (Sun)Entry closedMarathonShimonoseki Kaikyo Marathon 2026Yamaguchi · 42.195km · limit 6hEntry: closed (field full)Find lodging in Yamaguchi (Rakuten Travel, ad)
Nov 1 (Sun)Entry not confirmedMarathonToyama Marathon 2026Toyama · 42.195km · limit about 7hFind lodging in Toyama (Rakuten Travel, ad)
Nov 1 (Sun)Entry closedTrail runningOtari Shio-no-Michi Trail 2026Nagano, Niigata · 80km / 40km / 7km · limit 24h (80km)Entry: closedFind lodging in Nagano (Rakuten Travel, ad)
Nov 1 (Sun)Entry not confirmedTriathlon16th Japan U23 Triathlon Championships (2026, Odaiba, Tokyo)Tokyo · Standard (51.5km) · U23Find lodging in Tokyo (Rakuten Travel, ad)
Nov 1 (Sun)Entry not confirmedTriathlon32nd Japan Triathlon Championships (2026, Odaiba, Tokyo)Tokyo · Standard (swim1.5km, bike40km, run10km) · EliteFind lodging in Tokyo (Rakuten Travel, ad)
Nov 3 (Tue)Entry closedMarathon36th Gunma MarathonGunma · 42.195km · limit 6hEntry: closed (deadline was Aug 17)Find lodging in Gunma (Rakuten Travel, ad)
Nov 7 (Sat) – Nov 8Entry not confirmedTrail runningTokyo100Tokyo · 101km · limit 30hFind lodging in Tokyo (Rakuten Travel, ad)
Nov 7 (Sat)Entry closedTrail running15th Diamond Trail Run Championship 2026Nara · 33km · limit 8hEntry: open (until Oct 18)Find lodging in Nara (Rakuten Travel, ad)
Nov 8 (Sun)Entry not confirmedMarathonOkayama Marathon 2026Okayama · 42.195km · limit 6hFind lodging in Okayama (Rakuten Travel, ad)
Nov 8 (Sun)Entry closedTrail runningMikawa Highlands Trail Running RaceAichi · 22kmEntry: closed (deadline was scheduled for Oct 10)Find lodging in Aichi (Rakuten Travel, ad)
Nov 8 (Sun)Entry closedMarathonFukuoka Marathon 2026Fukuoka · 42.195km · limit 7hEntry: closed (deadline was May 20)Find lodging in Fukuoka (Rakuten Travel, ad)
Nov 8 (Sun)Entry closedTrail running10th Koshu Alps Auto Route ChallengeYamanashi · 108km / 70km / 55km / 36km · limit 18h (108km, 70km)Entry: closedFind lodging in Yamanashi (Rakuten Travel, ad)
Nov 14 (Sat) – Nov 15Entry not confirmedTrail runningFunTrails Round Chichibu & Okumusashi 100MILE / 100K / 50KSaitama · 160km / 105km / 54km · limit 32h (100MILE, 100K) / 12h (50K)Find lodging in Saitama (Rakuten Travel, ad)
Nov 14 (Sat) – Nov 15Entry not confirmedTriathlonWorld Triathlon Cup (2026, Miyazaki)Miyazaki · Standard (51.5km) · EliteFind lodging in Miyazaki (Rakuten Travel, ad)
Nov 14 (Sat) – Nov 15Entry closedTrail running11th Nikko National Park Mountain Running RaceTochigi · 45km / 30km / 12km / 10kmEntry: closedFind lodging in Tochigi (Rakuten Travel, ad)
Nov 15 (Sun)Entry not confirmedTriathlonJapan Age Group SD/SP Triathlon Championships (2026, Miyazaki)Miyazaki · Standard (51.5km) / SprintFind lodging in Miyazaki (Rakuten Travel, ad)
Nov 15 (Sun)Entry not confirmedMarathonKobe Marathon 2026Hyogo · 42.195km · limit 7hFind lodging in Hyogo (Rakuten Travel, ad)
Nov 22 (Sun)Entry closedTriathlonOkinawa KIN Triathlon 2026 (also the 2nd Japan Age Group LD Triathlon Championships)Okinawa · Middle (swim2km, bike70km, run22km)Entry: closedFind lodging in Okinawa (Rakuten Travel, ad)
Nov 22 (Sun)Entry not open yetTrail running15th Sagami Kazekko Trail RunningKanagawaEntry: opens Aug 1Find lodging in Kanagawa (Rakuten Travel, ad)
Nov 22 (Sun)Entry not confirmedMarathon34th Fukuchiyama MarathonKyoto · 42.195km · limit 6hFind lodging in Kyoto (Rakuten Travel, ad)
Nov 22 (Sun)Entry not confirmedMarathon43rd Tsukuba MarathonIbaraki · 42.195kmFind lodging in Ibaraki (Rakuten Travel, ad)
Nov 28 (Sat) – Nov 29Entry not confirmedTrail runningAWAJI ISLAND TRAIL -The Legend of KUNIUMI-Hyogo · 42km / 23km · limit 9h (42km) / 6h (23km)Find lodging in Hyogo (Rakuten Travel, ad)
Nov 29 (Sun)Entry openTrail runningSoToCCHi 45kSaitama · 45km · limit 10hEntry: open (until Oct 26)Find lodging in Saitama (Rakuten Travel, ad)

December 2026

Dec 5 (Sat)Entry openTrail runningYoro Mountains Trail Running RaceGifu, Mie · 41km / 12kmEntry: open (until Nov 9)Find lodging in Gifu (Rakuten Travel, ad)
Dec 6 (Sun)Entry openTrail runningTOYOTA CITY Sanage-yama Trail Running RaceAichi · 23km · limit 6hEntry: open (general entry until Oct 15, 300 spots)Find lodging in Aichi (Rakuten Travel, ad)
Dec 6 (Sun)Entry closedTrail runningHitachi Alps OCEAN Trail 2026Ibaraki · 42km / 23km / 5.2km · limit 8h (42km) / 6h (23km)Entry: closed for the long and middle coursesFind lodging in Ibaraki (Rakuten Travel, ad)
Dec 6 (Sun)Entry closedMarathonFukuoka International Marathon 2026Fukuoka · 42.195kmEntry: closed (deadline was Sep 11)Find lodging in Fukuoka (Rakuten Travel, ad)
Dec 6 (Sun)Entry closedTrail running12th Minobu-san & Shichimen-zan Monk's RunYamanashi · 40km / 13km · limit 8h (40km) / 4h (13km)Entry: closedFind lodging in Yamanashi (Rakuten Travel, ad)
Dec 6 (Sun)Entry not confirmedMarathon21st Shonan International MarathonKanagawa · 42.195km · limit 6h30mFind lodging in Kanagawa (Rakuten Travel, ad)
Dec 6 (Sun)Entry closedMarathon40th Anniversary NAHA MarathonOkinawa · 42.195km · limit 6h15mEntry: closedFind lodging in Okinawa (Rakuten Travel, ad)
Dec 6 (Sun)Entry not confirmedMarathon57th Hofu Yomiuri MarathonYamaguchi · 42.195kmFind lodging in Yamaguchi (Rakuten Travel, ad)
Dec 12 (Sat) – Dec 13Entry closedTrail runningIzu Trail Journey 2026Shizuoka · 70km (69.1km) / 28km (28.9km) · limit 14h (70k)Entry: closedFind lodging in Shizuoka (Rakuten Travel, ad)
Dec 13 (Sun)Entry not confirmedMarathonNara Marathon 2026Nara · 42.195km · limit 6h (9:00 start, until 15:00)Find lodging in Nara (Rakuten Travel, ad)
Dec 13 (Sun)Entry openTrail running16th Takeda no Mori Trail Running RaceYamanashi · 30km · limit 6h30mEntry: open (until Oct 31)Find lodging in Yamanashi (Rakuten Travel, ad)
Dec 13 (Sun)Entry openTrail running27th Mitake-san Mountain RaceTokyo · 15km · limit 2h30mEntry: open (until Oct 31)Find lodging in Tokyo (Rakuten Travel, ad)
Dec 13 (Sun)Entry not confirmedMarathon40th Aoshima Taiheiyo Marathon 2026Miyazaki · 42.195km · limit 6h20mFind lodging in Miyazaki (Rakuten Travel, ad)
Dec 20 (Sun)Entry openTrail running2nd Hachioji Jinba TrailTokyo · 23kmEntry: open (until Oct 26)Find lodging in Tokyo (Rakuten Travel, ad)
Dec 20 (Sun)Entry openTrail running3rd FunTrails Round Idaten in HannoSaitama · 14.4km / 8.7km · limit 5h (15K) / 3h (8K)Entry: open (until Nov 8)Find lodging in Saitama (Rakuten Travel, ad)
Dec 20 (Sun)Entry openTrail runningNokogiriyama Trail Run Dec. 2026Chiba · 22km / 11km · limit 5h (22km)Entry: open (until Nov 18)Find lodging in Chiba (Rakuten Travel, ad)
Dec 28 (Mon) – Dec 30Entry not confirmedTrail runningKYOTO GREAT ROUND 2026Shiga, Kyoto · 200K / 130K / 80K / 70K and more · limit 46h (200K)Find lodging in Shiga (Rakuten Travel, ad)

Jan 2027

Jan 10 (Sun)Entry not confirmedMarathonIbusuki Nanohana Marathon (January 2027)Kagoshima · 42.195km · limit 8hFind lodging in Kagoshima (Rakuten Travel, ad)
Jan 17 (Sun)Entry openMarathon24th Ishigaki Island MarathonOkinawa · 42.195km · limit 7hEntry: open (until Oct 31)Find lodging in Okinawa (Rakuten Travel, ad)
Jan 21 (Thu) – Jan 25Entry openHYROXHYROX Osaka (2026/27 season)Osaka · 8km run + 8 stationsEntry: on sale (since Sep 10, 2026)Find lodging in Osaka (Rakuten Travel, ad)
Jan 30 (Sat) – Jan 31Entry openTrail runningNara Ishibutai 100 Trail Running Race (ISHIBUTAI 100)Nara · 120K / 100K / 50K / 25K · limit 29h (120K) / 28h30m (100K) / 12h (50K)Entry: open (until Oct 31)Find lodging in Nara (Rakuten Travel, ad)
Jan 31 (Sun)Entry not open yetMarathon46th Osaka International Ladies MarathonOsaka · 42.195kmEntry: opens Oct 13Find lodging in Osaka (Rakuten Travel, ad)
Jan 31 (Sun)Entry openMarathon47th Tateyama Wakashio MarathonChiba · 42.195kmEntry: open (until Nov 3)Find lodging in Chiba (Rakuten Travel, ad)
Jan 31 (Sun)Entry closedMarathon74th Katsuta National MarathonIbaraki · 42.195km · limit 6hEntry: closed for general and furusato-nozei slotsFind lodging in Ibaraki (Rakuten Travel, ad)

February 2027

Feb 7 (Sun)Entry not confirmedMarathon64th Ehime MarathonEhime · 42.195km · limit 6hFind lodging in Ehime (Rakuten Travel, ad)
Feb 7 (Sun)Entry openMarathon75th Beppu-Oita Mainichi MarathonOita · 42.195km · cutoff-based (3h20m at 40km)Entry: Category 1 open (until Dec 7); second round Nov 4 to Nov 10Find lodging in Oita (Rakuten Travel, ad)
Feb 14 (Sun)Entry not open yetTrail runningNAGASAKI ROUND TRAIL 2027Nagasaki · 50km / 20km · limit 12h (50km) / 8h (20km)Entry: opens Sep 1, 2026Find lodging in Nagasaki (Rakuten Travel, ad)
Feb 14 (Sun)Entry closedMarathonSaitama Marathon 2027Saitama · 42.195km · limit 6hEntry: general marathon entry closed (field full)Find lodging in Saitama (Rakuten Travel, ad)
Feb 21 (Sun)Entry closedMarathonKyoto Marathon 2027Kyoto · 42.195km · limit 6hEntry: closed for general slotsFind lodging in Kyoto (Rakuten Travel, ad)
Feb 21 (Sun)Entry closedMarathonKitakyushu Marathon 2027Fukuoka · 42.195km · limit 6hEntry: closedFind lodging in Fukuoka (Rakuten Travel, ad)
Feb 21 (Sun)Entry closedMarathonKumamoto Castle Marathon 2027Kumamoto · 42.195km · limit 7hEntry: closed (lottery results on Oct 15)Find lodging in Kumamoto (Rakuten Travel, ad)
Feb 21 (Sun)Entry openMarathon31st Okinawa Marathon 2027Okinawa · 42.195km · limit 6h15mEntry: open (until Dec 13, or until full)Find lodging in Okinawa (Rakuten Travel, ad)
Feb 21 (Sun)Entry not open yetTrail running3rd 6-Hour Endurance Omote-Tanzawa Loop ChallengeKanagawa · 4.3km loop · limit 6hEntry: until Jan 31, 2027Find lodging in Kanagawa (Rakuten Travel, ad)
Feb 21 (Sun)Entry openMarathonKochi Ryoma Marathon 2027Kochi · 42.195km · limit 7hEntry: open (until Oct 31)Find lodging in Kochi (Rakuten Travel, ad)
Feb 28 (Sun)Entry openMarathonOsaka Marathon 2027Osaka · 42.195km · limit 7hEntry: general closed (charity slots still open)Find lodging in Osaka (Rakuten Travel, ad)
Feb 28 (Sun)Entry closedMarathon18th Iwaki Sunshine MarathonFukushima · 42.195km · limit 6hEntry: closed (field full)Find lodging in Fukushima (Rakuten Travel, ad)

March 2027

Mar 6 (Sat)Entry not open yetTrail running16th Rokko Traverse Trail Run 2027Hyogo · 38km / 24km · limit 9h30m (38km) / 7h (24km)Entry: until Feb 21, 2027Find lodging in Hyogo (Rakuten Travel, ad)
Mar 7 (Sun)Entry not confirmedTrail runningWorld Heritage Kumano Kodo Kohechi TRAIL JOURNEY in TotsukawaNara · limit 7h (Miura course)Find lodging in Nara (Rakuten Travel, ad)
Mar 7 (Sun)Entry closedMarathonTokyo Marathon 2027Tokyo · 42.195km · limit 7hEntry: general closedFind lodging in Tokyo (Rakuten Travel, ad)
Mar 7 (Sun)Entry openMarathonKagoshima Marathon 2027Kagoshima · 42.195km · limit 7hEntry: open (few spots left)Find lodging in Kagoshima (Rakuten Travel, ad)
Mar 14 (Sun)Entry not open yetMarathonTokushima Marathon 2027Tokushima · 42.195km · limit 6h30mEntry: closed for athlete and prefecture-resident early slotsFind lodging in Tokushima (Rakuten Travel, ad)
Mar 14 (Sun)Entry closedMarathonNagoya Women's Marathon 2027Aichi · 42.195km · limit 7hEntry: general lottery already heldFind lodging in Aichi (Rakuten Travel, ad)
Mar 14 (Sun)Entry closedMarathonShizuoka Marathon 2027Shizuoka · 42.195km · limit 6hEntry: closed (official site as of Oct 2)Find lodging in Shizuoka (Rakuten Travel, ad)
Mar 21 (Sun)Entry not confirmedMarathon2027 Itabashi City MarathonTokyo · 42.195km · limit 7hFind lodging in Tokyo (Rakuten Travel, ad)
Mar 21 (Sun)Entry not confirmedMarathonSaga Sakura Marathon 2027Saga · 42.195km · limit 6h30mFind lodging in Saga (Rakuten Travel, ad)
Mar 28 (Sun)Entry not confirmedMarathonFukui Sakura Marathon 2027Fukui · 42.195km · limit 7hFind lodging in Fukui (Rakuten Travel, ad)

April 2027

Apr 10 (Sat) – Apr 11Entry not open yetTrail runningHiroshima Ultra-Trail by UTMB 2027Hiroshima · 100K / 50K / 25KEntry: general entry opened Aug 20, 2026Find lodging in Hiroshima (Rakuten Travel, ad)
Apr 16 (Fri) – Apr 18Entry not open yetHYROXHYROX Nagoya (2026/27 season)Aichi · 8km run + 8 stationsEntry: not on sale yetFind lodging in Aichi (Rakuten Travel, ad)
Apr 17 (Sat)Entry not open yetTrail running32nd Kyoto Isshu Trail Run (Higashiyama Course)Kyoto · 23km / 13km · limit 8h (23km) / 6h (13km)Entry: until Apr 1, 2027Find lodging in Kyoto (Rakuten Travel, ad)
Apr 18 (Sun)Entry not confirmedMarathonKasumigaura Marathon & International Blind Marathon 2027Ibaraki · 42.195km · limit 6hFind lodging in Ibaraki (Rakuten Travel, ad)
Apr 18 (Sun)Entry not confirmedTriathlonIshigaki Island Triathlon 2027Okinawa · Standard (swim1.5km, bike40km, run10km)Find lodging in Okinawa (Rakuten Travel, ad)
Apr 18 (Sun)Entry closedMarathon29th Nagano MarathonNagano · 42.195km · limit 5hEntry: closedFind lodging in Nagano (Rakuten Travel, ad)
Apr 23 (Fri) – Apr 25Entry not open yetTrail runningMt.FUJI 100 2027Shizuoka, Yamanashi · 100mi / 70k / 40kEntry: general entry Nov 2 to Nov 15, 2026Find lodging in Shizuoka (Rakuten Travel, ad)
Apr 25 (Sun)Entry openTriathlonAll Japan Triathlon Miyakojima (41st)Okinawa · Long (swim3km, bike123km, run42.195km) · limit 13hEntry: open (until Oct 31, not first come first served)Find lodging in Okinawa (Rakuten Travel, ad)

May 2027

May 3 (Mon) – May 4Entry not open yetTrail running2027 UEDA VERTICAL RACE (13th Taroyama Mountain Race)NaganoEntry: not announced (race is planned)Find lodging in Nagano (Rakuten Travel, ad)
May 8 (Sat) – May 9Entry not open yetTrail runningICT100 (Iwate Coastal Trail 100km) 2027Iwate · 100kmEntry: not announced yetFind lodging in Iwate (Rakuten Travel, ad)
May 15 (Sat) – May 16Entry not open yetTriathlonWorld Triathlon Yokohama (2027, T50 World Championship Tour / Age Group)Kanagawa · Elite (T50) / Age groupEntry: age-group entry expected to open in early NovemberFind lodging in Kanagawa (Rakuten Travel, ad)
May 22 (Sat) – May 23Entry not confirmedTriathlonWorld Masters Games 2027 Kansai, Triathlon (Tokushima, Hiwasa Umigame course)Tokushima · Standard (1.5km swim, 40km bike, 10km run) / Sprint · ages 30 and overFind lodging in Tokushima (Rakuten Travel, ad)

June 2027

Jun 3 (Thu) – Jun 6Entry openTrail runningTAMBA100 Adventure Trail 2027Hyogo · 220K / 100mile / 50K / 20K · limit 71h (220K) / 57h (100mile)Entry: open (100 mile sales paused)Find lodging in Hyogo (Rakuten Travel, ad)
Jun 13 (Sun)Entry not open yetTrail runningEchigo Country Trail 2027Niigata · 63km / 22km / 2.5kmEntry: not announced yetFind lodging in Niigata (Rakuten Travel, ad)
Jun 19 (Sat) – Jun 20Entry not open yetTrail runningKaga Spa Trail Endurance 100 by UTMB 2027Ishikawa · 100K / 50K / 20KEntry: UTMB Index priority entry opens Oct 20, 2026Find lodging in Ishikawa (Rakuten Travel, ad)
Jun 25 (Fri) – Jun 27Entry openTrail runningDEEP JAPAN ULTRA 100 2027Niigata · 160km / 80km / 30kmEntry: open (until Feb 26, 2027)Find lodging in Niigata (Rakuten Travel, ad)

How this calendar works

Tap a race name to open its official site.
Dates, entry periods and time limits can change. Check the official site before you enter.
A green "Entry open" tag means the official site was taking entries on the day I checked. A gray "Entry closed" tag means you can no longer enter.
Races that have already finished drop off the list automatically.
"Find lodging" is an ad link that opens a list of hotels in the race's prefecture on Rakuten Travel.

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