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

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

On June 8, 2026 (Monday), Trail Runners signed a cooperation agreement with the Japan Self-Defense Forces Niigata Regional Cooperation Headquarters for the purpose of promoting health.

The "IBUKI GPS" will be available for pickup from 7:30 AM on Friday, the 26th, the day of the competition.

Players who registered the day before the tournament must come to pick up the "IBUKI GPS" on the day of the competition.

The "IBUKI GPS" is mandatory equipmen!

If you are arriving by car, please use the designated parking area for the event.

The parking lot in front of the Irihirose Town Hall is not a designated parking area for the event.

Please also inform your family and friends who are coming to support the event not to park in any parking lots of surrounding facilities.

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.

Ensure you are adequately replenishing fluids and electrolytes and take precautions against heatstroke.

Entry list update

On Saturday, June 27th, a DEEP JAPAN ULTRA 100 support event will be held at the plaza in front of the visitor center, which also serves as an aid station (CP8) on the 160km course.

Let's cheer on the athletes while enjoying live music!

On Sunday, May 10th, 2026, we welcomed 15 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.

The locations of the aid stations at CP6 and CP9 have changed for the "DEEP JAPAN 160km" course. As a result, some of the course will also be changed.

The deadline for shuttle bus applications is Tuesday, March 31st.

If you wish to use the shuttle bus, please read the important notes and apply early.

We will be running a promotional booth for the DEEP JAPAN ULTRA 100 at the IZU TRAIL Journey Outdoor Expo.

Date and Time: Saturday, December 13th, 9:00 AM - 4:00 PM

Venue: Rakujuen Park, Mishima City Park

At the promotional booth, we will be holding an original raffle where you can find out the results immediately.

On Saturday and Sunday, November 2nd and 3rd, 2024, we welcomed 15 people to the DEEP JAPAN ULTRA 100 course and held the "2025 Tournament Entry Qualification Granted!! DEEP JAPAN ULTRA 100 Official Trial Camp with Kazuyuki Takahashi." We would like to express our sincere gratitude to everyone who participated, the Asakusa Sanso and Yottege Residence staff, and all those involved.

We held the restoration of the Hokurei hiking trail at Mt. SUMON, one of the community contribution projects of DEEP JAPAN ULTRA 100, which was recognized by Niigata Prefecture as a "community development business organization that supports the natural environment".

From October 16th to 17th, DEEP JAPAN ULTRA100 will have a PR booth at TransJeju by UTMB.
At the booth, we will hold a lottery where you can win DEEP JAPAN ULTRA100 merchandise.
Please come and visit us!


10월 16일부터 17일까지, TransJeju by UTMB에서 DEEP JAPAN ULTRA100 홍보 부스를 운영합니다.
부스에서는 DEEP JAPAN ULTRA100 굿즈가 당첨되는 추첨 이벤트를 진행합니다.
많은 방문 부탁드립니다!

Lottery form

DEEP JAPAN ULTRA 100 2026, Entries open today !

Aid Station Information Map.

*Private support is available at aid stations marked with "Personal Support (P.S.)" on the aid station information map.

On Tuesday, September 16, 2025, as part of Trail Runners' SDGs project, the "National Mountain Region Future Building Project," we held a "Dream Lesson" at South Nou Elementary School in Itoigawa 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 Tuesday, September 16, 2025, as part of Trail Runners' SDGs project, the "National Mountain Region Future Building Project," we held a "Dream Lesson" at Nakago Elementary School in Jyoetsu 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 Friday, September 12, 2025, as part of Trail Runners' SDGs project, the "National Mountain Region Future Building Project," we held a "Dream Lesson" at Ishiuchi Elementary School in South Uonuma 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.