Hangetsu Mountain Hiking Guide — Nikko’s Best Half-Day Loop

Hangetsu Mountain (Half-Moon Mountain) is a 10.5 km loop hike above the south shore of Lake Chuzenji, in the mountains of Nikko. From the trailhead near Kegon Falls it climbs through the Chanokidaira plateau to a half-moon lookout at 1,753 m — one of the finest panoramas over the lake toward Nantai Mountain — then returns lakeside past the former Italian Embassy Villa. Moderate, 5–6 hours with stops. Base yourself at Earth Hostel Nikko Riverhouse.

Trail at a Glance

Base at Earth Hostel Nikko Riverhouse — free morning shuttle to Nikko Station, then the bus to Kegon Falls. Hangetsuyama (半月山, Mount Hangetsu, Half-Moon Mountain) pairs well with Senjogahara on the same bus corridor. Hangetsu is one of more than two dozen routes in our Nikko hiking guide.

We run free morning shuttles to Nikko Station so you can catch the bus to Kegon Falls. Hangetsu is a great day-before or day-after pairing with Senjogahara — both are reachable from the same bus corridor. See all hiking trails in Nikko ›

Getting to the Trailhead

The Hangetsu Mountain trail begins near Kegon Falls, about a 15-minute walk from the Kegon Falls bus stop (or the Tachiki Kannon Iriguchi stop). From Earth Hostel Nikko Riverhouse, take the free morning shuttle to Nikko Station, then the bus up the mountain to Chuzenji Onsen — the same corridor that serves Senjogahara, which makes the two an easy back-to-back pairing. About 50 metres past the trailhead you get your first view of Lake Chuzenji with Nantai Mountain rising straight out of it. During the autumn-foliage season (1 October to 8 November), a seasonal Hangetsusan bus runs to the upper trailhead; the full shuttle-and-bus timetable is further down this page.

It takes about 6 hours to hike the entire loop; starting from the gate (Torii) at the entrance to Chuzenji Lake, crossing the plateaux of Chanokidaira, peak of Nujin, the peak of Hangetsu and walking lakeside from Mujina Kubo, past the Italian Embassy Villa and Chuzen Temple.

The Climb to Chanokidaira

The trail starts gently. The first viewpoint over Lake Chuzenji comes quickly, and then the route drops and climbs again to reach Chanokidaira, a broad wooded plateau with several sets of benches — the natural spot for a first break. It’s a quiet, green stretch full of birdsong and small wildlife; in Nikko you’ll also notice trees wrapped with netting around the trunk, protection against the deer that strip the bark.

About 50 meters past the trail head is a little view of Chuzenji Lake and Nantai rising from it

In Nikko, you will often see trees with a net around the trunks, the reason is that the deer will do this to them

A rather simple beginning of the hike

Mostly covered by the growth and vegetation of the area, the Chanoki Daira (Plateaux) is a great spot for a little break.  There are several sets of benches to sit down at

There is certainly much wildlife in this area. Sit down and enjoy the bird chirps and smaller creatures

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If you enjoyed the plateaux, you won’t really need to break here, view of Chuzenji Lake and Nantai Mountain (out of frame)

Hangetsu Peak & the Half-Moon Lookout

Past the plateau the trail briefly merges with the parking area of the abandoned Chuzenji Observatory, then splits off again and climbs gently through birch forest. The true peak of Hangetsu (半月山) is wrapped in trees with no view — but continue about 10 minutes to the observation deck and the panorama opens completely: Lake Chuzenji below, Nantai Mountain across the water, and Senjogahara stretching into the distance. At 1,753 m this half-moon lookout is the high point of the hike and its defining view. Deer are often resting under the deck if you arrive quietly.

Soon the hiking trail merges with the parking area of the Chuzenji Observatory

The trail splits again from the road and is at a slight incline for several minutes

Birch trees all around

The peak of Hangetsu is actually completely surrounded by trees with no view of the area, you have to continue about 10 minutes to the lookout deck further along the path

from the lookout, Nantai Mountain and Senjogahara in the distance

from the lookout, Nantai Mountain and Senjogahara in the distance

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Down to the Lake & the Lakeside Return

From the lookout the descent to Lake Chuzenji is quick, with switchbacks most of the way. Listen for a stream off-trail to the west, worth a short look. At the bottom you reach Mujinakubo, a remote and beautiful corner of the lakeshore. The walk back follows the quiet lakeside path, passing the former Italian Embassy Villa Park and Chuzen-ji (中禅寺) before closing the loop near the trailhead. In October the whole return glows with koyo — maple and birch turning over the water, with Nantai as the backdrop. It’s a calm, scenic way to finish a hike.

surrounded by beautiful landscapes

surrounded by beautiful landscapes

Tranquil Chuzenji Lake awaits

Koyo, Birch, Chuzenji Lake and Nantai Mountain

and a great way to finish the hike.

Fallen maple leaf & birch bark, Mijina Bay, Lake Chuzenji and Nantai Mountain.

Really looking forward to some great hikes this autumn to see the autumn foliage (koyo).

Seasonal service · 1 Oct – 8 Nov only

From the hostel to the Hangetsu trailhead to the trailhead

The full chain: Earth Hostel shuttle → Tobu-Nikko Station → Tobu bus to Chuzenji Onsen → seasonal Hangetsusan bus. Only four buses a day reach the trailhead, so the connections below are built around them.

One smooth morning: in October, Hangetsu is one of Nikko’s finest autumn-foliage hikes, and many Earth Hostel Nikko Riverhouse guests head straight out for it. Ride the morning shuttle, change at Tobu-Nikko for the Chuzenji bus, then take the seasonal bus up. To catch the 9:00 AM departure, take the early shuttle and tell us the night before.

Earth Hostel Shuttle leaves	Tobu-Nikko Stn board bus	Chuzenji Onsen change	Hangetsusan trailhead · arrive
7:23am	7:53am	8:38am	9:20am
9:35am	10:05am	10:50am	11:30am
AFTERNOON
—	12:07pm	12:52pm	1:20pm
—	2:13pm	2:58pm	3:30pm

Seasonal Hangetsusan departures from Chuzenji Onsen: 9:00 AM, 11:10 AM, 1:00 PM, 3:10 PM (arriving the trailhead ~20 min later). The 9:00 or 11:10 AM buses give the most daylight for the 10.5 km loop (about 4 hr moving, 5–6 hr with stops). Morning shuttle runs ~6-10 AM; for the earliest connection just ask the night before.

Earth Hostel Nikko Riverhouse

Sleep right beside the Kurokawa river. An open-air lounge with no curfew, fireflies and the Milky Way through the summer, and a free morning shuttle straight to the trailheads — the best place in the mountains of Nikko to come back to after a long day on the trail.

Check availability →

From the lookout back to the hostel return, synced to pickup

Hangetsusan → Chuzenji Onsen → Tobu bus to Tobu-Nikko → Earth Hostel evening pickup. The last bus connects all the way home.

Two ways down, one easy return: from the observation deck you can descend south to Hangetsu parking for the seasonal bus, or carry on around the full loop on foot down to Lake Chuzenji and back along the shore. Either way, get to Chuzenji Onsen for the Tobu bus down. We collect guests from Tobu-Nikko Station at 4:30, 6:30 and 9:00 PM — the last seasonal bus lines up neatly with the 6:30 PM pickup (see the highlighted row).

Hangetsusan depart	Chuzenji Onsen arrive / change	Tobu-Nikko Stn pickup point	Hostel pickup we collect you
9:30am	9:50am	11:06am	midday return
11:40am	12:00pm	12:46pm	midday return
AFTERNOON
1:30pm	1:50pm	3:06pm	4:30pm
3:40pm	4:00pm	5:11pm	6:30pm

The highlighted row is the last bus down: leave Hangetsusan at 3:40 PM, reach Chuzenji 4:00 PM, catch the 4:35 PM Tobu bus to Tobu-Nikko (5:11 PM), and we collect you at 6:30 PM. Miss it and there is no later seasonal service — so if you’re taking the bus down, plan your time on the hill to be back at Hangetsu parking in good time.

Covered by passes: the seasonal Hangetsusan bus and the main Chuzenji line are included in the Chuzenji Onsen and All Nikko passes. See getting here for pass details and the full Nikko bus timetable for the main mountain line.

• Pay as you get off — ¥10,000 / ¥5,000 / ¥2,000 notes and credit cards are accepted on board.
• Runs 1 October to 8 November only, the autumn-foliage season — no Hangetsusan bus outside these dates.
• Four departures each way per day; the connection times shown are from the live Nikko shuttle and bus schedule — confirm on the day, as foliage traffic and shrine festivals can shift times.
• Not staying with us? You are welcome to use this timetable — and if you would rather wake up on the river minutes from the trail, come stay.