Mount Kumotori is one of the 100 Famous Japanese Mountains listed by mountaineer Kyūya Fukada.
The mountain marks the triple border point of Tokyo, Saitama, and Yamanashi prefectures.
The summit area features a stone monument commemorating the Tokyo Prefecture boundary.
It is a central filming location featured in popular anime series, leading to significant popularity among domestic hikers.
The mountain ridge was historically significant as a logging route during the Edo period.
Mount Kumotori stands as the highest peak in Tokyo Prefecture at an elevation of 2,017 meters, serving as the junction point between Tokyo, Saitama, and Yamanashi Prefectures. The summit is located within the Chichibu-Tama-Kai National Park, characterized by its extensive ridgeline trails. It is a prominent destination for high-altitude trekking, accessible via multiple multi-day routes including the Kamosawa trail. The mountain serves as a habitat for diverse alpine flora and fauna, including the Japanese serow. The terrain consists primarily of coniferous forests giving way to rocky ridges near the summit. The peak offers panoramic views of Mount Fuji to the west and the Kanto Plain to the east.
The summit stone marker with Mount Fuji as the backdrop during clear winter days.
Bring a high-capacity portable power bank as temperatures drop rapidly and battery drain is common.
Prepare for multi-day trekking as reaching the summit typically requires an overnight stay in the mountain huts.
Check local weather reports specifically for Kumotori, as mountain microclimates differ significantly from Tokyo city forecasts.
Attempting the ascent in a single day without significant prior experience or poor gear, as the total round-trip distance exceeds 20 kilometers.
Trails may be closed or restricted in mid-winter due to heavy snow and ice conditions; huts require advance reservation.
Practice 'leave no trace' principles, carry all trash back out, and maintain silence near mountain huts to respect sleeping hikers.
