Subscribe to the Mountains of Wisdom Mailer

* indicates required

IDE-SAN (Mt. Ide)


100 Famous Mountains of Yamagata


Ide-san is the namesake of the Ide Renpo and one of the 100 Famous Mountains of Japan known for the depth to which you can get into nature.

Ide-san is the namesake of the Ide Renpo and one of the 100 Famous Mountains of Japan known for the depth to which you can get into nature.


Mt. Ide, Mt. Ide-san


Ide-san (飯豊山いいでさん) is a 2105m (6906 ft.) peak in the Okitama Region of Yamagata prefecture best climbed from July to October. Ide-san is a level 7 in terms of physical demand, which means it is extremely hard to hike, has a C technical grade, which means it requires a moderate level of expertise, and you want to allow at least 24 hours for a climb.

Mountain Range

Ide Renpo


Okitama Region


2105m (6906 ft.)

Technical Demand

C (requires expertise)

Physical Demand

7 (extremely demanding)


Tengudaira Trail (10 to 16 hours one-way), Dainichisugi Trail (10 hours one way)

Best time to climb

July to October

Day trip possible?

No. You must stay on the mountain.

Minimum Time Required

20 hours of hiking, so you must stay on the mountain


Lying along the borders of Yamagata, Niigata, and Fukushima Prefectures, Ide-san is a mountain known for mountain worship since ancient times. Although shorter than Oasahi-dake, the other 100 Famous Mountain of Japan along the Ide Renpo, Ide-san is a very popular destination for its alpine vegetation including flower fields, and the sheer depth into nature at which one can go on the mountain. These are major pulling factors for those aiming to hike the 100 Famous Mountains of Japan.

Ide-san is a particularly difficult mountain to reach requiring technical skill and endurance. No matter which trail you take, a day hike on Ide-san is all but impossible and you will need to stay somewhere on the mountain. The top of the ridge along Mikuni-dake, Ide-san, and Onishi-dake, and the summit of Ide-san, are in Fukushima prefecture.

Tengudaira Trail (10 to 16 hours one-way)

The Tengudaira Trailhead in Oguni Town has two main trails starting from Ide Sanso mountain lodge. First is the trail that goes via Kitamata-dake on either the Marumori or the Kashigawa ridges. Second is the direct route along the Daigura ridge. For those going via Kitamata-dake there are emergency huts on each of the Mon’nai-dake, Kitamata-dake, and Onishi-dake summits, but there are no huts along the Daigura ridge meaning this trail is only suitable for advanced hikers.

There is a primeval beech forest surrounding Ide Sanso, which was also Japan’s first ‘forest therapy’ base.

Access to the trailhead is on a paved road and there is enough space for about 11 cars at the trailhead. 370m from the trailhead on an unpaved road there is space for about 30 cars. There is a public toilet open 24 hours about 400m in front of Ide Sanso.

Dainichisugi Trail (10 hours one way)

The Dainichisugi Trailhead is located in Ide Town and starts at the Dainichisugi Hut at the end of a paved road. The Dainichisugi Trail takes you via Jizo-take and Tanemaki-yama to the summit of Ide-san. The Kiriawase Mountain Hut lies along the trail near the junction for Tanemaki-yama. Besides the Zange slope right near the trailhead there aren’t many steep parts, however there are snowbanks along the way so an ice axe and crampons are necessary. Be sure to check the condition of the snow before climbing up.

Access to the Dainichisugi Trailhead is possible via a paved road. There is a space for parking on gravel about 120m in front of the trailhead where about 30 cars can park. There is also space for about 6 cars in front of the bridge at the end of the forest road. There is also a toilet on the ground floor of the Dainichisugi Hut.


Subscribe to my weekly yamabushi newsletter


Mt. Yudono Shrine Gates during the autumn
The Dewa Sanzan’s Mountain of Rebirth: Yudono-san (Mt. Yudono)
A Jizo statue at the top of Mt. Kyogakura in Sakata
Womb Passes and Monkey Crossings: Kyogakura-san “The Shugendo Peak of Sutras” (Mt. Kyogakura)
Sanze village near Mt. Fujikura surrounded by green mountains and the blue Sea of Japan can be seen through the trees in the distance through the trees of Mt. Fujikura
Sanze’s Little Helper: Fantastic Fujikura-yama (Mt. Fujikura)

About the author

Tim Bunting Kiwi Yamabushi




Hi, I’m Tim Bunting AKA the Kiwi Yamabushi, a New Zealander who became a Yamabushi Ascetic in the Dewa Sanzan mountains of north Japan. I’m part of the Yamabushido team, and we host life-altering Yamabushi training on the Dewa Sanzan (website I made). People come to us for the ultimate mindfulness experience, to reach the next level, or simply connect with nature and themselves.

I’m on a mission to summit all 100 Famous Mountains of Yamagata Prefecture to spread the splendour of this fabulous location, and in dedication to all those who lost their lives out in nature, including my father.

Sign up for the Mountains of Wisdom mailer for updates, follow me on social (IG, FB, YT, Twitter, TikTok, CR, all @kiwiyamabushi), or send me an email to get in touch.


Subscribe to the Mountains of Wisdom Mailer Here


Subscribe to the Mountains of Wisdom Mailer

* indicates required


Get In Touch

Share this:

Like this:

Like Loading...
Scroll to Top
%d bloggers like this: