Marunuma Kogen

The on-mountain stay is Chalet Marunuma, a 20-room lodge at 1,400 metres right on the slopes. It's room-only, with a free light breakfast of bread and coffee, a shared kitchen with a microwave and fridge, and its own natural hot spring that's open into the evening. Bring your own food from a convenience store on Route 120 and you have an affordable, walk-to-the-ropeway base that suits long stays and budget groups. Ask about their packages that bundle two-day lift tickets with the room.

Down the hill, there's a cluster of small pensions, cosy inns with shared dinners and family-run hospitality, that make good bases if you'd rather someone else did the cooking. They're an easy drive from the slopes and work well for rotating between Marunuma Kogen, Oze Iwakura and Oze Tokura. Our explainer on what a pension is in Japan covers how these stays usually work.

For the cheapest and most flexible option, Numata has business hotels right on the expressway, about 50 minutes from the slopes. They suit groups who want to pick a different Katashina resort each day depending on the forecast.

Start with the Nikko Shirane Ropeway. It's the only way to the 2,000 metre top and the start of the Shirane runs, wide intermediate cruisers that lead into the four kilometre descent to the base. On a cold morning after fresh grooming, that full-length run is the best warm-up in Gunma, and it shows you exactly how the snow has set up overnight. From there, the No. 4 and No. 5 Super Twin chairs are the workhorses for recycling the upper and middle mountain without riding all the way down.

The upper slopes hold the best snow. The altitude keeps it dry and cold, and on a clear day the upper runs stay firm and fast while the lower slopes start to soften. The usual plan is simple: ski high in the morning, shift lower as the sun works on the snow, and finish on whatever is in shade.

For something steeper, the Silver course is the advanced run, around 755 metres long and up to 32 degrees. It's left ungroomed, so most of the time it's a long mogul field, and after a storm it becomes the resort's best natural powder run. On good snow days the resort also leaves some other courses ungroomed, which gives you fresh tracks without needing to duck a rope.

The Mountain Design zone is the fun surprise. A local rider who grew up on this hill shaped a stretch of the mountain with natural features, including fallen logs and rolls built into the slope, so you can play your way down from top to bottom instead of just carving. The separate snow park has small to medium kickers, rails and boxes, all included with your lift ticket. It's one of the better setups in the region for intermediate freestyle riders.

Riding outside the course boundary is banned and enforced, and the trees inside the area aren't padded, so treat the edges with respect. There's no gate system and no sanctioned sidecountry. Wind is the main weather risk at this altitude, and a strong westerly can shut the ropeway, leaving you on the lower chairs. In spring, the high elevation keeps the upper runs skiable well into late April, which is what sets Marunuma Kogen apart from most of Kanto.

By car, take the Kan-Etsu Expressway to Numata IC, then Route 120 east through Katashina, about 50 minutes to the resort. From central Tokyo, allow around three hours in clear weather, longer on busy weekends or in heavy snow. The road stays on a main route the whole way and is well cleared, but winter tyres are essential and chains are smart in a storm. Our winter car hire and driving guide covers the rental side.

The big gotcha is your sat-nav. Many navigation apps route you from Tokyo via Nikko, but the road from Nikko Yumoto Onsen over the pass is closed for winter, which can mean a three-hour detour. Always set your route via Numata. Parking is free on weekdays, while the central car parks charge on weekends and holidays, and the outer lots are free.

Without a car, the Katashina Snow Express runs once a day from Busta Shinjuku to Kamata in Katashina in mid-winter, and local buses run up from Numata Station. Bus tours from Tokyo are another option for a day trip.

Marunuma Kogen is a great pick for intermediates who love long groomers and riders who want to keep skiing well into spring. The four kilometre top-to-bottom run and steady pitch make it ideal for building confidence at speed, and the season runs into early May. If you're planning a late-season trip, compare it with our pick of Japan's best spring ski resorts, since few hills this close to Tokyo last as long.

Freestyle riders get more than usual here. The Mountain Design zone and the snow park make it a good fit for park-curious intermediates, and our guide to Japan's best terrain parks is a handy comparison if that's your priority. Families are well covered too, with a free kids park and a separate Friendly Area with its own cheaper pass for beginners.

Strong riders after trees, gates or steep powder will want more. Pair Marunuma Kogen with Oze Iwakura for steeper groomers, or head to Mt. T when a cold storm cycle sets up.

On the mountain, the cafeterias cover the classics: curry rice, ramen, katsu and fried chicken. Lines move quickly and prices are fair. The Center Station is the hub, with tickets upstairs and a day-trip onsen built into the building, so a soak is just a short walk from the slopes.

Après is quiet and onsen-based. A bath at the Center Station or back at your lodge, then dinner at your pension, is about as busy as the evening gets. There's no real bar scene in this part of Katashina, so if you're staying at Chalet Marunuma, stock up at a convenience store on the way in. If you want more buzz, save it for a night back in Tokyo.

• Lift hours: 08:30 to 16:00 in early season, extended to 16:30 from mid-January to early April. No night skiing.
• Season: Usually early December to Golden Week in early May, one of the longest seasons in Kanto.
• Tickets: Weekdays are cheaper than weekends. Online tickets load onto a reusable IC card, so you can go straight to the lift, and convenience stores along Route 120 sell discounted advance tickets. The POWDER5 Gunma pass also covers four other Katashina resorts.
• Boundaries: No gates and no out-of-bounds riding. Ungroomed runs like Silver are the legal way to ride powder.
• Snow and weather: High elevation means dry snow and a long season, but strong wind can close the ropeway. Check the live lift status before heading up on a gusty day.
• Nearby resorts: Oze Iwakura has steeper, longer groomers, Oze Tokura is quiet and close by, Katashina Kogen suits families, and Kawaba is a good stop on the way back toward Numata.