Mayoizawa-yama (Kamihirasawa Route)

迷沢山(上平沢林道経由)

Posted on Jan 28, 2025
0
SWNS
Posted on Jan 28, 2025
0 0
SWNS
9km

Distance

4 hours

Time

550m

Ascent

1005m

Highest point

4/10
Difficulty
Snow Icon | Hokkaido Wilds
Jan-Mar

Best season

TOPO
On this approach to Mayoizawa-yama 迷沢山 (1005m), skiers have the option to stay on an easy-to-follow forestry road the entire way (as opposed to the eastern approach). This makes it a great option for folks just starting on their backcountry journey, or any backcountry skier looking for a nice walk on skis early in the season. There are options to shortcut the winding forestry road though, so skiers confident in their route-finding will enjoy some tree skiing along the broad ridge on the descent. Trailhead parking is limited, so consider car pooling from a nearby parking lot.

We visited this route on Jan 25, 2025

Skiers: Haidee, Timbah, Roo, Greg

Topomap

Route Map

Need to know details

Location

Mayoizawa-yama is a flat, non-descript peak west of Sapporo City in the foothills. This approach to the peak starts from the western side, from Prefectural Highway 1 on the way to Sapporo Kokusai Ski Resort 国際スキー場 from Jozankei 定山渓. The trailhead is the entrance to the Kamihirasawa Forestry Road 上平沢林道.

General notes

There are two popular winter approaches to Mayoizawa-yama (literally “Lost-your-way-creek Mountain”). One is from the east, from the sleepy suburb of Heiwa in Sapporo City proper (see that route here). Arguably, that route has the better skiing, as it’s possible to ski most of the descent along the clear-cut forest under the power lines. This western approach, however, has its merits. It’s a dead-easy approach, with a forestry road to follow to the summit. The forestry road will also be suitable for skinning/snowshoeing as early as late December – much earlier than the area’s ‘off-road’ backcountry terrain. This makes this western Kamihirasawa route suitable for an easy early-season climb to get the climbing legs into shape.

It’s not all boring forestry road though. For the upper 30% or so of the route, it’s possible to shortcut the winding forestry road to get some untracked trail-breaking and downhill skiing in.

Hut
None
Route details

If you just want a brain-dead easy hike to the summit, from the Kamihirasawa Forestry Road 上平沢林道 gate, follow the snowed-in road to the summit. There are several dog-leg bends along the way. Arguably, however, it’s more interesting to ditch the road about 2km from the gate. From here, gain the main southwest-aspect ridge and break trail through the old-growth forest. You’ll cross the winding, meandering road a couple of times. At 540m altitude on the road, you’ll pass under the first of two power lines. The second one is at 830m along the southwest ridge. The upper power line is characterized by a large clearing in the forest under the lines.

The summit of Mayoizawa-yama is more of a knoll than anything else, surrounded by a large plateau-like expanse. Take care in low visibility conditions not to get lost.

On the descent, either follow the forestry road all the way back down, or enjoy some tight tree turns along the main ridge.

Route Timing
Up | 2.5hrs
Down | 1hrs

If you’re treating this peak as a backcountry climbing training session, it’s unlikely you’ll spend more than a few hours on the skis. There are bird-watching and general forest-bathing (shinnrinn-yoku 森林浴) opportunities along the way, however, so it’s worth packing a hot drink and a lunch, and make a nice morning or afternoon out of it.

Transport

Public transport:

There is no public transport to this route.

By car:

Access by private vehicle is via Prefectural Road 1 – this is the road that accesses Sapporo Kokusai Ski Resort, either from Jozankei in the south, or Otaru in the north. Right at the trailhead is a small cleared area large enough to fit two vehicles. About 40m down the road is another small two-vehicle cleared spot. If your party has more than two vehicles, we’d recommend a park-and-drive approach, carpooling to reduce pressure on the parking spots. One option for larger parking areas close by are the Jozankei Dam Driftwood Processing Plant 定山渓ダム流木処理場 (location) and the Lake Sapporo First Observation Deck 札幌湖第一展望台 (location).

Physical maps
Official Topo Map: Teineyama (手稲山) – map no. NK-54-14-14-2

NOTE: The official 1/25000 topo map(s) above can be purchased for 350yen from Kinokuniya bookstore next to Sapporo Station or online (in Japanese).

Aspect
The main aspect skiers are exposed to on the descent and/or ascent is Southwest. Other aspects that may also be encountered while following the route outlined on this page include: North, South. Therefore, keep an eye on the weather forecast a few days ahead of your trip to monitor wind, snow, and temperature. Also, since this route is in the general vicinity of the Shiribeshi area, consider looking at the Japan Avalanche Network avalanche bulletins (updated Tuesdays, Thursdays, Saturdays at 8am) or the daily Niseko Avalanche Information website. These may give extra insight into avalanche conditions in the greater area around the route.

Snow and
route safety

Of particular note for Mayoizawa-yama is the broad, plateau-like summit area. In low visibility conditions, it wouldn’t take much to get disoriented. Even if just following the forestry road, make sure to have route files and a map downloaded to your phone – make sure to do this in town before arriving at the trailhead. Mobile reception is sparse along this section of Prefectural Highway 1.

Mayoizawa-yama (Kamihirasawa Route) Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

C

30

Time ascending

C

3

Technicality

Altitude

B

6

Hazards

D

0

Navigation

D

0

Totals

39/100

GRADES range from A (very difficult) to D (easy).  More details here. Rating rubric adapted from Hokkaido Yukiyama Guidebook 北海道雪山ガイド.

Weather forecast

Windy.com weather forecast for Mayoizawa-yama
Onsen nearby

For those accessing this route from Sapporo, you’ll be returning to the city via the Jozankei onsen area. There are several options, including Yu-no-hana 湯の花 (location, 850yen), a large onsen complex with good views of the Jozankei river gorge from the outdoor baths. They also have a large, airy, open restaurant/lounge area. Closer to Sapporo City is the more down-do-earth Matsu-no-yu 松の湯 (location, 650yen), right next to the Toyohira River. They also have a small restaurant, plus lovely views of the river gorge from the outdoor baths.

Extra Resources
No extra English resources that we know of. If you know of any, please let us know in the comments.

Guide Options

If you’d like to ski this route and/or explore other hills around Sapporo together with a local certified guide, get in touch with either Wataru Nara or Yasuko Kikuchi. They’re both Hokkaido born-and-bred Sapporo-based JMGA-certified guides. They both cut their teeth on peaks including those around Sapporo City and have taken part in major international expeditions. In addition, see a full list of English-speaking Hokkaido Mountain Guides Association (HMGA) guides on the HMGA website here

Support us

Like this content? Buy the HokkaidoWilds.org team a coffee. 50% of tips go to the Hokkaido Wilds Foundation.

Yamano-Makochan's Video Report
Show Full Route Notes Close Route Notes

Route Trip Notes

It was Jan 25th. After a year-end bout of influenza, and then a string of weekend work commitments, it felt like a real treat to finally get the skis out of storage for the first time this 2024/2025 winter season. What better way to start the season than with a more-than-a-walk-than-a-ski walk up Mayoizawa-yama.

Like most trips on HokkaidoWilds.org, this route up the western side of Mayoizawa-yama had been on the list for a long while. It had always been pushed to the side, however, in favour of better, deeper powder skiing elsewhere. But today we finally made it happen.

The only hiccup was at the start of the trip.

“I don’t have my boots!” exclaimed Haidee. In the fog of the early morning sleepiness, we’d missed putting her boots in the van.

Luckily, we still had her piste skis in the van, however, so Haidee resigned to doing laps at the nearby Sapporo Kokusai resort with rental boots.

The rest of us pushed on with the plan. The route was as expected. Pleasant road walking, some short-cutting up through the forest, and a nide flat-ish plateau approach to the summit proper.

On the descent, we mostly stuck to the road for a rip-roaring, fun blat back to the trailhead.

Comments | Queries | Reports

Done this route to Mayoizawa-yama, or others nearby? Thinking of doing it? Please post any feedback, reports, or queries here. Thanks!

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

See More Like this

Printable Mayoizawa-yama Topomap

TOPO DOWNLOAD (PDF, 6.8MB)

Download may take some time

Hokkaido Wilds Foundation

We’ve got affiliate links on HokkaidoWilds.org to help fund the Hokkaido Wilds foundation.

The Foundation gets a small commission on sales from affiliate links, but we only link to stuff we think is worth checking out for people keen on the outdoors in Hokkaido and Japan.

The Hokkaido Wilds Foundation is a fund where 100% of funds are donated to Hokkaido volunteer groups involved in sustainable, safe, and responsible access to the Hokkaido outdoors.

Learn more here

ADVANCED FILTERS

Filter by location

About Filters

REGION: The general mountain/geographical region the route is in.

BEST MONTH(S): Time of year a route is suited to visiting. Some pop all season, some are more limited.

DIFFICULTY: How strenuous a route is, and how technical it is. Full details here.

FREERIDE/SKITOUR: Very subjective, but is a route more-of-a-walk-than-a-ski or the other way around? Some routes are all about the screaming downhill (freeride), some are more about the hunt for a peak or nice forest (ski-tour). Some are in between. 

MAIN ASPECT: Which cardinal direction the primary consequential slope is facing, that you might encounter on the route. More details here.

ROUTE TAGS: An eclectic picking of other categories that routes might belong to.

SEARCH BY LOCATION: You can find routes near your current location – just click on the crosshairs (). You may need to give permission to HokkaidoWilds.org to know your GPS location (don’t worry, we won’t track you). Or, type in a destination, such as Niseko or Sapporo or Asahikawa etc.

Please let us know how we can make it easier to narrow down your search. Contact Rob at rob@hokkaidowilds.org with your suggestions.

Mayoizawa-yama (Kamihirasawa Route) Difficulty Rating

Category

Grade

Points

Strenuousness

Vertical Gain

C

30

Time ascending

C

3

Technicality

Altitude

B

6

Hazards

D

0

Navigation

D

0

Totals

39/100

GRADES range from A (very difficult) to D (easy). Hazards include exposure to avalanche and fall risk. More details here. Rating rubric adapted from Hokkaido Yukiyama Guidebook 北海道雪山ガイド.