The road to your own record
Picture the course in advance
and find the pace that fits you.

The city you want to run becomes your next trip.




THE DREAM
This 71.5 km mountain race with a 24-hour time limit starts at 1:00 p.m. from Itsukaichi Junior High School in Akiruno,
Tokyo, and runs through the Okutama mountains.
After dark you switch on your headlamp and keep following the ridgelines, then return to the school the next day.
The field is 2,000 runners.
Picture the course in advance
and find the pace that fits you.
Streets lined with cheers, runners all around.
You'll be part of that scene.
Take it slow with the finish still in you,
and meet the city all over again.
From the joy of finishing to the tough moments — read what runners wrote themselves.
“I crossed the finish line at 12:29, with 31 minutes to spare before the time limit 24-hour mark.”
A runner who has taken part almost every year since 2002 started at the very back and finished 31 minutes before time limit. The hardest parts were the crowded road right after the start, the night section run by headlamp, and the climb from Gotō Pass up to Gozenyama.
Quoted from the original · translated
ゴール地点の到着時刻は12時29分で、制限時間24時間まで残り31分前でした。
Read the original on 山と溪谷オンライン YAMA-YA“I ran into the school grounds and finish. It wasn't a strong finish. Run or die! Fist bumps with everyone.”
A runner who took up trail running this year ran the 34th edition (start 1:00 pm on 11 October) in 9:41:10. Thanks to collecting course information in advance and practicing fueling, the runner's stomach stayed settled to the end, but came away regretting a lack of downhill technique and power hiking, and remembers the finish at the school sports field.
Quoted from the original · translated
学校の敷地内へ、ゴール。ストロングフィニッシュではない。ランオアダイ!みんなとグータッチ。
Read the original on note“I finished the final Hasetsune. My time didn't match the 13-hour-range finish from three years ago, but I suffered to the very end and enjoyed it to the very end.”
On a fourth start, a 0-night, 2-day trip from Osaka, the runner finished in 15:31. Even when the legs gave out on the climbs, they recovered on the descents, and the runner came in smiling along the Kompira ridge.
Quoted from the original · translated
ラストハセツネ完走できました。 記録は3年前の13時間台におよびませんが、目一杯苦しめ、そして楽しみました。
Read the original on YAMAPWe translated a short line from each public race report and summarized the experience. Finish times are as stated by the author, and past editions may differ from this year's weather and operations.
Preview the course and read what runners who went before you wrote.
This may be from a past edition. Check the organizer for this year's course and operations.
YOUR ENTRY
Here are the ways to enter and what each requires.
Check the organizer's page for whether entries are open.
General registration opened on June 1 at 9 p.m. and accepted entries until the field filled.
No lottery was announced (as of the 2026 edition).
Must be 16 or older on race day (under 18 requires parental consent) and carry the designated GPS device
Organizer's pageTo enter the elite category, you must be a past winner or have a reference index of 600 (men) or 550 (women) or higher.
Priority entry covers last year's 30K priority holders and anyone who has volunteered four or more times;
runners with 15 or more finishes get a separate invitation entry.
Verification of elite, priority and 15-finish eligibility
Organizer's pageAkiruno City and the village of Hinohara both offer furusato nozei (hometown tax donation) quotas.
Each requires a donation of at least 30,000 yen, separate from the entry fee.
Furusato nozei donation
Organizer's pageRACE WEEK
Know the course and time limit, and race day comes into focus.
24 hours (until 1 p.m. the next day)
| Event | Gather | Start | Time limit | Entry fee | Field size | Bib pickup |
|---|---|---|---|---|---|---|
| ハセツネCUP 71.5km71.5km | 12:30 | 13:00 | 13:00 (+1) | ¥24,000 | 2,000 | 2026-10-11 12:00 |
Cutoff
Nyusan Pass 3 hours 16:00 (tentative) / Daigomaru 6 hours 19:00 (tentative) / Asama Pass 9 hours 22:00 / Tsukimidai No. 2 Parking Lot 15 hours 04:00 / Naganodaira 21 hours 10:00
Runners start · local time — 1:00 p.m. start for elite and general runners together (opening ceremony 12:30 p.m., 2026 edition)
The Hasetsune Cup is a 71.5 km mountain race that starts at Itsukaichi Junior High School in Akiruno,
Tokyo, loops through the Okutama mountains and returns to the same school.
The Tokyo Mountaineering Federation started it about 30 years ago, and the name is said to honor the climber Tsuneo Hasegawa.
The race starts at 1 p.m. and you have 24 hours to finish, until 1 p.m. the next day, so you spend the entire night in the mountains.
The course climbs from Imakuma Shrine through Daigomaru, Mt. Shoto (990 m) and the Sasao ridge to Mt. Mito (1,527 m),
then descends via Mt. Odake (1,266 m), Mitake Shrine (929 m) and the Konpira-o ridge.
Because it is a hiking-style course that crosses one high peak after another, it feels nothing like a road marathon.
The finish rate swings widely from year to year.
In 2025, 1,738 runners started and 1,269 (73.0 percent) finished, and the men's winner ran 7:49:01.
In 2026, 1,448 of 1,778 (81.4 percent) finished, in heat that reportedly felt like midsummer despite the early-autumn date.
The field is 2,000 including the furusato nozei (hometown tax) quota.
The organizers explain that the race's aims also include mountain safety and nature conservation.
Pick up your bib, check your wave.
So on race morning, you can just run.
The official information lists no separate expo, and bib pickup is held at the school.

JR Musashi-Itsukaichi Station
About a 15-minute walk from JR Musashi-Itsukaichi Station (Itsukaichi Line) to Itsukaichi Junior High School. From Shinjuku take the Chuo Line Rapid to Tachikawa (25-30 min), then the Itsukaichi Line to Musashi-Itsukaichi (about 40 min).
No shuttle is published; private cars must use public parking.
Your start time, fuel and bag drop.
Know them ahead and the run feels easier.
The start is at 1 p.m., with an opening ceremony at 12:30 p.m. (based on the 2026 edition).
Bib pickup is on race day from 8 a.m. to noon at Itsukaichi Junior High School, and latecomers may be turned away, so arrive early.
It's about a 15-minute walk from JR Musashi-Itsukaichi Station to the school, and the official information mentions no shuttle.
If you drive, use the public parking lots;
illegally parked cars are towed.
Bring your entry ticket and either your health insurance card or My Number card to bib pickup.
The timing chip you receive must be attached to your shoelace and returned at the finish or at the point where you drop out;
if you lose it, you must pay compensation.
The designated GPS device (IBUKI) is mandatory, and rental costs 2,200 yen.
Poles are prohibited until the first cut-off point, and earphones (including bone-conduction ones) are prohibited.
The organizers recommend carrying at least 2 L of water, a rain jacket that also keeps you warm, food to eat on the run, and a light.
The cut-off point times are: Nyusan Pass at 3 hours, 4 p.m. (provisional);
Daigomaru at 6 hours, 7 p.m. (provisional); Asama Pass at 9 hours, 10 p.m.;
the Tsukimidai parking lot at 15 hours, 4 a.m.;
and Naganodaira at 21 hours, 10 a.m. The finish stays open until 1 p.m. the next day.
Temperatures fall hard after sunset, so pack separate layers for the night.
One report noted that the course narrows about 2 km after the start and causes congestion.
In 2026 there were warnings about suzumebachi (hornets) and notices of a detour around logging work, so be sure to check the official news before the race.
A courier service for shipping your bags was also offered.
Arriving early and wondering where to stay the night before?
Since bib pickup closes at noon, leaving Shinjuku on the morning of the race is enough, but allow plenty of time for transfers.
Times are local to Akiruno. Check the latest official information before the race.
STAY A LITTLE
From a hotel that makes race morning easy,
to the meals and views you'll enjoy with the medal on.
Accommodation · 2.5km
View on Booking.com¥9,707
View on Klook¥20,659
View on Klook¥12,477
View on KlookGuestHouse · 3.8km
View on Booking.com¥19,897
View on Klook¥3,751
View on KlookDistances are straight-line from the start/finish area.
Check real travel times and booking terms with each hotel.
Accommodation · 2.5km
View on Booking.comGuestHouse · 3.8km
View on Booking.comAccommodation · 1.2km · 18-minute walk
View on Booking.comAccommodation · 1.6km · 24-minute walk
View on Booking.comAccommodation · 1.6km · 24-minute walk
View on Booking.comAccommodation · 1.6km · 24-minute walk
View on Booking.comAccommodation · 903m · 14-minute walk
View on Booking.comSwipe sideways to see more hotels.
Rest a little, wander a little.
Pick what suits you and whoever you're with.
¥9,707
View on Klook¥19,897
View on Klook¥41,428
View on Klook¥18,239
View on Klook¥2,920
View on Klook¥17,773
View on Klook¥14,964
View on Klook¥20,229
View on GetYourGuide¥19,503
View on Klook¥16,140
View on Klook¥5,202
View on Klook¥19,503
View on Klook¥20,841
View on Klook¥20,809
View on Klook¥20,229
View on GetYourGuide¥20,229
View on GetYourGuide¥13,254
View on Klook¥9,306
View on Klook¥11,959
View on Klook¥10,363
View on Klook¥19,773
View on Klook¥52,338
View on Klook¥1,712
View on Klook¥62,191
View on Klook¥31,529
View on Klook¥14,560
View on Klook¥14,053
View on Klook¥4,691
View on Klook¥10,319
View on Klook¥11,276
View on Klook¥11,959
View on Klook¥20,841
View on Klook¥50,475
View on GetYourGuide¥14,765
View on Klook¥1,555
View on Klook¥22,886
View on Klook¥8,287
View on Klook¥24,978
View on Klook¥9,886
View on Klook¥46,632
View on GetYourGuide¥6,509
View on Klook¥6,886
View on Klook¥1,913
View on Klook¥11,233
View on Klook¥13,879
View on Klook¥58,666
View on GetYourGuide¥58,669
View on GetYourGuide¥4,270
View on Klook¥11,441
View on Klook¥5,720
View on Klook¥38,633
View on Klook¥27,959
View on Klook¥7,586
View on Klook¥3,648
View on Klook¥9,762
View on Klook¥19,773
View on KlookA meal before the race, a dinner to celebrate the finish.
¥20,659
View on Klook¥3,751
View on Klook¥8,456
View on Klook¥5,202
View on Klook¥3,751
View on Klook¥13,721
View on Klook¥18,578
View on KlookThe city you ran — this time, a little slower.
¥12,477
View on Klook¥18,094
View on Klook¥69,710
View on Klook¥11,622
View on Klook¥61,769
View on Klook¥14,455
View on Klook¥67,146
View on KlookOnce saved, you can open this page without an internet connection
Be the first runner
Leave this room's first post
Entry routes: First come, first served · Qualifying time · Other.
Registration is handled on the official website.
The main event costs ¥24,000.
24 hours (until 1 p.m. the next day).
trail71.
Bib pickup 8:00 to 12:00, opening ceremony 12:30.
Itsukaichi Junior High School.
The Hasetsune Cup is a 71.5 km mountain race that starts at Itsukaichi Junior High School in Akiruno,
Tokyo, loops through the Okutama mountains and returns to the same school.
The Tokyo Mountaineering Federation started it about 30 years ago, and the name is said to honor the climber Tsuneo Hasegawa.
Itsukaichi Junior High School.