Japan's steepest lift-served terrain is in Hakuba Cortina (42° on Hieda Course 2), Lotte Arai's freeride zones and Tenjindaira. Gradients, vertical and safety rules.
Japan's steepest lift-served pitch is at Hakuba Cortina, where Hieda Course 2 reaches a maximum gradient of 42 degrees (36 degrees average) over 625 m, according to STEEP. For sustained vertical, Lotte Arai has about 950 m from summit to base and ten avalanche-controlled freeride zones. Tenjindaira in Gunma is the place for serious backcountry lines, but only with full avalanche gear and a plan.
Most Japanese resorts top out at 30 to 35 degrees on their hardest groomed runs. The country's reputation rests on snowfall, so expert skiers who want steep angles need to pick their mountains.
| Resort | Prefecture | Vertical | Steepest listed pitch | Notes |
|---|---|---|---|---|
| Hakuba Cortina | Nagano | 530 m | 42° (Hieda Course 2) | North facing, ungroomed, tree skiing |
| Happo-one | Nagano | 1,071 m | 35° | Mogul runs Kokusai, Usagidaira, Kurobishi |
| Lotte Arai | Niigata | 951 m | 34° on piste, steeper in freeride zones | 10 freeride zones, about 162 ha |
| Tenjindaira (Mt.T) | Gunma | 750 m | 34° on piste | Backcountry access off the ropeway |
Gradients are the steepest figures published for marked courses. Off-piste angles inside freeride zones and backcountry are steeper and are not officially measured.
For lift-served terrain, it is one of the strongest candidates. Cortina sits at the north end of the Hakuba Valley and STEEP notes it often gets 10 to 20 cm more snow than the rest of the valley. Hieda Course 2 (42° max) and Hieda Course 3 (39° max, 27° average) are both north facing and left ungroomed, which keeps powder cold after a storm. The tree terrain between runs is steeper than most of Hakuba but has no published angle.
Cortina is small: about 530 m of vertical. On a powder morning the steep lines track out fast, so be at the lift at opening. Check the Hakuba snow forecast guide the night before.
Happo-one is Hakuba's biggest mountain, with 1,071 m of vertical and an 8 km longest run. Its listed maximum pitch is 35 degrees. Most of the difficulty comes from moguls: Kokusai is a rarely groomed bump run, Usagidaira has big moguls and no easy bypass above it, and Kurobishi's moguls are considered harder still. The steepest groomed section is mid-mountain on Shirakaba Central. On windy days the upper lifts close, so check the Happo-One live cameras before you buy a ticket.
Lotte Arai, near Myoko in Niigata, first opened in 1993, went bankrupt in 2006 and reopened under Hotel Lotte in December 2017. The official slope map lists 14 groomed courses and 10 freeride zones covering about 1.62 km², rated 40% advanced and 40% expert. Zone names include Benzaku, Zendana Bowl, Big Bowl and Mamushi. Zendana Bowl hosts Freeride World Qualifier events.
The resort labels all freeride zones as avalanche terrain. Patrol opens and closes them daily. Read the resort's safety rules before entering and carry a beacon, shovel and probe. Arai is about 30 minutes by free shuttle from Joetsu-Myoko Station on the Hokuriku Shinkansen.
Tenjindaira, renamed Mt.T after Hoshino Resorts took over in December 2024, sits on Mt. Tanigawa in Gunma. You reach the slopes by the Tanigawadake Ropeway, about 50 minutes by bus from Jomo-Kogen Station. The groomed runs are modest (34° max), but the backcountry above and around them includes some of the most serious avalanche terrain in Honshu.
The resort designates exit points for backcountry access and lists some areas just outside the boundary as closed. Tanigawa has a long accident history, and Gunma Prefecture has a specific ordinance for climbing on the mountain. Submit a climbing notice (tozan todoke) at the ropeway before heading past the observation area, as Japan's tourism agency guide advises. The Tajirizawa descent course only opens when there is enough snow to the valley floor, and the decision is made day by day. Season usually runs from early December into May.
Steep slopes and heavy, fast snowfall load avalanche paths quickly. Anyone leaving the groomed runs should carry a transceiver, shovel and probe, ride with a partner, and know how to do a companion rescue. Read the daily bulletin from the Japan Avalanche Network, which covers Hakuba, Myoko and Tanigawa among other areas. Wear a helmet, especially in trees and steeps. If you are new to Japanese tree skiing, start with our tree skiing guide, and hire a certified backcountry guide for anything beyond the resort boundary.
Among lift-served marked courses, Hakuba Cortina's Hieda Course 2 is one of the steepest at 42 degrees. Some small resorts publish similar numbers on short pitches, such as Seki Onsen in Myoko at 45 degrees.
Not inside resort boundaries. Couloirs and big alpine faces exist in the Northern Alps and on Tanigawa, but they are backcountry objectives that need a guide, avalanche training and stable conditions.
Mid-January to February has the deepest, coldest snow. March often brings more stable snowpack and longer days, which suits steeper lines once the avalanche risk drops.