2025 Short movie of DEEP JAPAN ULTRA 100 was published.

Dorp return is at UONUMA IRIHIROSE ELEMENTARY SCHOOL GYM.

The time will be 9:00 today

Introducing the “special menu” offered at each aid station.

Enjoy our “special menu” featuring ingredients from Niigata.

There are two water sources around Odake. One is“Gojin Shimizu” on the way from the Futakuchi Trailhead to Odake, and “Kibitaki Shimizu” on the way from Odake to the Hokkyurei Hut.

Temperatures are expected to rise during the competition period. Be sure to replenish fluids and electrolytes, and take precautions against heatstroke.

This year, we will be broadcasting the event live on YouTube's Trail Runners Channel (https://www.youtube.com/c/TRAILRUNNERS) with even more power than last year.

Cold weather kit has been removed from the list of mandatory gear.

Temperatures are expected to rise during the competition period. Please be careful not to suffer from heatstroke.

Thanks to the kindness of Suwa Onsen, business hours have been extended during the tournament period.

You can check the DEEP JAPAN ULTRA 100 ～NIIGATA～ 2025 results from the link in the post.

After checking the remaining snow conditions on the course, we have decided to exclude a remaining snow kit from the required equipment list.

The necessary equipment, “IBUKI GPS,” will be handed out on Friday, the day of the competition, starting at 7:30 a.m. on the 27th.

Participants who have selected the day-before registration option must come to the registration location at the gymnasium to receive their “IBUKI GPS.”

The sub-phone number for the Tournament Headquarters has changed. The main phone number remains unchanged.

Please register the new number on your mobile phone in advance.

Old: Sub-phone number 070-4368-5782

→

New: Sub-phone number 080-7851-5650

Main phone number 0258-66-7991

Although it was stated that showers would be available at CP8 “Visitor Center,” due to a malfunction in the facility's water heater, showers will not be available during the competition period.

During the event, family and friends can check the location of athletes via Ibuki Link.

On Monday, June 10, 2024, as part of Trail Runners' SDGs project, the "National Mountain Region Future Building Project," we held a "Dream Lesson" at Ishizaka Elementary School in Nagaoka City, Niigata Prefecture, as a contribution to the local community around the venue of DEEP JAPAN ULTRA 100." The lesson taught students how to turn their passion into a job while remaining in their hometown.

On Saturday and Sunday, June 7th and 8th, 2025, we welcomed 17 people and held "2026 Tournament Entry Qualification Granted!! DEEP JAPAN ULTRA 100 Official Trial Camp with Gediminas Grinius" on the DEEP JAPAN ULTRA 100 course. We would like to express our sincere gratitude to everyone who participated, to Asakusa Sanso and Yotege House, and to all those involved.

[Dream Lesson] will be held on Monday, June 9, 2025 at Maekawa Elementary School in Nagaoka City, Niigata Prefecture, the venue of DEEP JAPAN ULTRA 100. The "Dream Lesson" is part of Trail Runners' SDGs project "National Mountain Region Future Building Project," and is held out of Matsunaga's strong desire to teach children the importance of pursuing what they love. At the [Dream Lesson] at Maekawa Elementary School in Nagaoka City, we will invite ultra-trail world champion Gediminas Grinius to give a running class and a lecture. Parents and local residents are welcome to participate in this opportunity.

A simple aid station will be set up at the entrance to the Futakuchi Trail, available only to 30km runners on both the outward and return routes.

Entry list update

On Sunday, May 10th, 2025, we welcomed 17 people to the DEEP JAPAN ULTRA 100 course and held the "DEEP JAPAN ULTRA 100 Official Trial Camp with Kazuyuki Takahashi." We would like to express our sincere gratitude to everyone who participated, Iiyuratei staff, and all those involved.

We’re thrilled to announce the official 2025–2026 partnership between Khong by UTCM 2025, one of Thailand’s most celebrated trail running events, and DEEP JAPAN ULTRA 100, Japan’s premier ultra-distance trail race known for its breathtaking scenery and extreme challenge.

Exclusive Opportunity for DEEP JAPAN ULTRA 100 Finishers