Overview
Mount Kokoge is a 1,288-meter peak rising along the main ridgeline of the Tanzawa Mountains. Straddling the border between Midori Ward in Sagamihara City and the town of Yamakita in Kanagawa Prefecture, it lies within Tanzawa-Oyama Quasi-National Park. The steep ridge linking it to neighboring Mount Okoge is broken by chain sections and iron ladders, making it one of the more demanding stretches in Tanzawa and a magnet for fit, experienced hikers drawn to its deep forest, rocky spine, and sweeping ridgeline views.
Highlights
- ●A serious 1,288-meter peak on the Tanzawa main ridge
- ●A rocky ridge of chains and iron ladders toward Mount Okoge
- ●A border summit between Sagamihara's Midori Ward and Yamakita
- ●Rich nature and views within Tanzawa-Oyama Quasi-National Park
History
As one of the peaks along the Tanzawa main ridge, Mount Kokoge has long been familiar to mountaineers. It belongs to Tanzawa-Oyama Quasi-National Park and, together with the surrounding summits, forms a precious pocket of nature close to the Tokyo metropolitan area. The origin of its name and any history of mountain worship are subjects of differing accounts; consult official sources and hiking guides for details. The traverse across its rugged rock faces has been handed down as a route that distills the essence of Tanzawa climbing.
Access
The peak sits on the Tanzawa main ridge at the border of Sagamihara's Midori Ward and Yamakita town, at roughly 35.49 north latitude and 139.09 east longitude. Standing on a ridgeline at 1,288 meters, it is serious mountain terrain reached by traversing the ridge from surrounding trailheads. With continuous chains and iron ladders, it demands climbing experience and proper gear. Always confirm current trail conditions and transport access through official sources and local or hut information.
Best season
Early summer, with its dazzling fresh greenery, and autumn, when the ridge takes on color, are the best seasons to climb. The high reaches of Tanzawa see snow and ice in winter, making the chains and ladders slippery and dangerous; avoid them without proper gear and experience. Prepare for sudden weather changes and plan with ample margin.
Map
35.4903, 139.0903 · Wikidata
Suggested itinerary
- 1Set out well-prepared from a trailhead toward the Tanzawa main ridge
- 2Advance along the ridge and carefully tackle the chains and iron ladders
- 3Take in the Tanzawa ranges from the 1,288-meter summit of Kokoge
- 4Descend safely and with time to spare toward Okoge or back the way you came
Did you know?
💡 The stretch from Mount Kokoge to Mount Okoge is known for its many steep spots, broken by chain sections and iron ladders. This rocky thrill is one of the signature features of the Tanzawa main-ridge traverse. More than the figure of 1,288 meters suggests, it is a peak that stays in hikers' memories for how tough it feels underfoot.
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