I had previously walked several sections of the Yatsugatake Sanroku Super Trail, from Kiyosato station to Kai-koizumi station (sections 5 & 6), from Nobeyama station to Kiyosato station (sections 7 & 8) and the Kirigamine Highland loop (#15); I was reminded of this long distance trail earlier this year when I passed by the head office of the Japan Long Trail Association at the Momofuku Ando Center. I felt it was time to explore another section of this multi-day trail around the foothills of the Yatsugatake mountain range. Looking at my map, it seemed that section 9, between Nobeyama station and Matsubara Lake, could be done as a day trip from Tokyo. It was on the long side, and although the elevation change was modest, I would need to walk fast with few breaks to complete it before dark.
Hiking on Yatsugatake 八ヶ岳
To get to the start of the hike, I would ride the Chuo line limited express to Kobuchizawa, and there, change to the Koumi lime for the half an hour 500 meter ascent to Nobeyama station. At the end of the hike, I could catch a bus from Matsubara Lake and get off at Yahho Onsen. After a hot bath, I could use the same bus in the opposite direction to get to Matsubarako Station; there, I could board the Koumi line for the one hour trip to Sakudaira station where I could hop on the shinkansen for Tokyo. The weather was supposed to be sunny, and although the temperatures would reach 20°C in the lowlands, they would remain under 10°C in the highlands. I was looking forward to a countryside ramble with views of the Nagano mountains.


Oku-Chichibu Mountains (left) Mt Ogura (right)


Japanese Maple (left) Matsubara Lake Path (right)
It was a sunny Autumn day as I rode the Azusa Limited Express to Kobuchizawa (887m), where I transferred to the packed two-car Koumi line train bound for Komoro. It was only from Kiyosato station that I could get a seat on the last section of the ride up the southeastern edge of Yatsugatake. A little before 11am, I stepped off the train at Nobeyama station (1345m), the highest train station in Japan, also the start of today’s section of the Yatsugatake Sanroku Super Trail (八ヶ岳山麓スーパートレイル) or Super Trail of the Mt Yatsu Foothills.

View of Yatsugatake from the Makiba Line

Nagano Autumn View
I was immediately chilled by the mountain breeze, as well as the freezing wind blowing from the Yatsugatake mountains directly opposite. After bundling up, I set off along a busy road past an equally busy dairy farm, but soon turned right onto a quiet countryside lane through mixed forest, the Yatsugatake Makiba Line (八ヶ岳まきばライン) which I’d follow for most of the hike. I soon reached an open section with pastures on each side of the road and wide views in both directions.

Mt Ogura (left), Mt Otoko (center) & Mt Tengu (right)

Autumn Leaves near Senga Falls
I was glad to get a view so soon on the hike. Looking west, I could see the Southern Yatsugatake mountains, its peaks tinged in white and its foothills tinted red; on the east side were the lower but more numerous peaks of the Oku-Chichibu mountains. Low clouds had appeared directly above Yatsugatake, casting shade on its steep rocky flanks; it made me wonder if the sunny weather would hold. The road dipped into a shallow valley and after crossing a bridge, I reached another viewpoint of the Oku-Chichibu mountains.

Autumn Colours above Senga Falls

Metal Staircase for Senga Falls
I was stunned by the contrast of light blue sky and pale yellow susuki grass. In the distance, I could make out, from left to right, Mt Ogura, Mt Otoko, Mt Tengu, Mt Yokoo and Mt Meshimori. The susuki was swaying in successive breezes, fluffy clouds moving south to north along the valley between the two mountain ranges. As the noon chime played, I remembered I was on a tight schedule and set off again, the occasional passing car interrupting the peaceful surroundings. I turned left at a junction with another road, staying on the Makiba line, and followed the road as it descended into a forested valley.

The Okuchichibu mountains with pastures in the foreground

Heading down into the Chikuma River Valley
I was pleased to discover the entrance to a hiking trail just past a bridge over a river. It was signposted for a waterfall and although time was short today, I decided to check it out. After a five-minute walk along a rough path, I reached the top of a metal staircase. From the base, it was a short distance to the roaring Senga Falls (千ヶ滝), its flow likely inflated due to the recent rains. After taking a while to admire the tumbling water, I retraced my steps to a spot next to the river where I sat on a boulder for a lunch break.

Clouds heading towards Mt Asama

Dark Clouds above Yatsugatake
I was treated to a magical scenery of falling leaves with every gust of wind. The background music of rushing water nearly nursed me to sleep but I had to move along as it was nearly 1pm. Back on the road, I was surprised to see workers in uniform sweeping and raking the fallen leaves in the middle of nowhere. I turned right at a junction, staying on the main road. After another straight section with pastures and a view of the Oku-chichibu mountains, I turned left at the next junction, leaving the main road for a lane, also part of the Makiba line, going up through mixed forest.

Autumn Colours along the Chikuma River Valley

Koumi Line before Umijiri Station
I now passed the highest point of today’s hike (1410m) completely surrounded by orange larches. I caught some movement in the forest and spotted a pair of deer before they bounded away. Soon the road veered right, exited the forest, and descended through farmland where people were busy working the fields. Far away to the north, beyond the green lettuce fields, was Mt Asama; turning around, dark menacing clouds threatened to engulf Yatsugatake. I continued downhill and soon the sound of rushing water could be heard; peering through the trees on the left side, I spotted a river flowing through a forested valley. Beyond a bridge the valley deepened, offering sweeping views of the opposite ridge.

Autumn Colours at Ioin Temple

Footbridge over Otsuki River
This was the most beautiful section of the hike, the mountainside across the valley resplendent with Autumn colours and enhanced by the afternoon sun. Around 2h30, I reached the base of the valley and crossed the Chikuma river, the longest river in Japan; a little later, I passed through the small town around Umijiri station (1035m), the lowest point of today’s hike. After quickly checking out Ioin Temple, I followed a road heading back up into the mountains. Upon reaching a plateau, I turned right through a small community, and crossed a wooden footbridge high above a river.

Mt Ogura from the Footbridge over Mt Otsuki

Fiery Maple Leaf at Matsubara Lake
At the midway point, I had an impressive view of the orange-hued river valley, with Mt Ogura in the far distance, two puffy clouds floating overhead. It was now past 3pm so I hurried along, anxious to catch my bus. Here and there rice was still being harvested in individual fields, sharing the land with solar farms. The sun had sunk below the clouds on the west side, muting the colours of Cho Lake along the way. Soon after, I finally arrived at Matsubara Lake (松原湖), the main attraction of Matsubara Highland (松原湖高原). I followed a path along the lakeshore admiring the red and yellow colours along the way, before hopping on the bus for Yahho Hot spring. After a short but refreshing bath, I boarded the bus on its return trip to Matsubarako station.

Autumn Colours at Matsubara Lake

Lake View at the End of the Hike
In total, the hike took nearly five hours, mostly along paved roads which enabled me to walk at a fast pace. I was glad to have caught the Autumn colours at their peak, the first time for me to see them this season. Unlike the Asama-Yatsugatake Panorama Trail, signposting was non-existent and I had to rely on my phone GPS to find my way. This could explain why I saw no other hikers along the way. In the future I hope to be able to do sections 1 and 11, as they also seem doable as one day trips via public transport, and perhaps in a different season.
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