Kaida Kogen Mia is a ski area located on the northeastern slopes of Mt Ontake in Kiso Town, in the western region of Nagano Prefecture and close to the border with Gifu Prefecture.
This ski area often comes across as being confused about its own name! Traditionally, it has been known as Kaida Kogen Mia. In recent years, however, it has called itself MIA Ski Resort or just MIA and the ski area has used all three names on its official website. Somewhat confusingly, it looks like they are back to Kaida Kogen Mia since the 2023-2024 season (...even though MIA SKI RESORT remains in some places!)
The MIA name comes from the Latin 'Memoria In Aeterna' (In Eternal Memory).
There is one 1655m quad lift and one 1241m pair lift at Mia. A second pair ski lift in the lower area no longer operates.
With a top elevation of over 2100m, it gets very cold, and there are usually good snow conditions.
Mountain
statistics
Top/peak (m)
2120
Vertical (m)
563
Bottom/base (m)
1557
Beginner runs (%)
40
Intermediate runs (%)
30
Advanced runs (%)
30
Longest course (m)
3200
Steepest slope (°)
32
Number of courses
5
Ski lifts
2
Ropeway cable car
0
Gondola
0
Quad lift (4-person)
1
Triple lift (3-person)
0
Pair lift (2-person)
1
Single lift (1-person)
0
Surface lift
0
Information
Normal season dates
Kaida Kogen Mia usually plans to be open from mid-December until early April. See below for the actual opening and closing dates in recent seasons.
Normal opening times
This ski area is normally open from 8:30am until 4:30pm. The pair lift operates from 9:00am until 4:00pm. The ski area will be open on Tuesdays and Wednesdays during the 2025-2026 season (unlike last season).
Night skiing
There is no night skiing.
Snow shoe
There is a snow shoe course off the top of the quad lift. Extra charges apply and rental equipment is available.
Families & children
The Kids Park is located near the base of the ski area, usually featuring the Raku Raku Tunnel, sledding, snow tubing and more items for young children. Some features are only available on weekends.
Lessons
Ski and snowboard lessons are available at Kaida Kogen Mia.
Rental
Ski and snowboard equipment & wear rental is available.
Lift ticket prices
2025-2026 season
Information for the upcoming 2026-2027 season will be added by December 2026
1 day
Adult: 5,200 yen
Child: 1,800 yen
Senior: 4,500 yen
Afternoon
Adult: 4,200 yen
Senior: 3,500 yen
1 lift coupon
Adult: 1,500 yen
Child: 600 yen
Senior: 1,500 yen
Season ticket
Adult: 45,000 yen
Child: 22,000 yen
Senior: 38,000 yen
A cheaper lift ticket for people 75 years and over is also available at 4,200 yen.
A season ticket for Senior High School students is 33,000 yen.
Historical snow depth data
The following ski season and official snow depth data have been independently compiled by SnowJapan for publication on this website. Where available, the data is updated annually after each ski season.
First and last dates of recent seasons
2025-2026 season: 20th December - 29th March (100 days)
2024-2025 season: 15th December - 30th March (106 days)
2023-2024 season: 8th December - 7th April (122 days)
2022-2023 season: 17th December - 7th April (112 days)
2021-2022 season: 11th December - 25th April (136 days)
Deepest recorded snow depth
2025-2026 season: 120cm on 30th January - 4th February
2024-2025 season: 160cm on 20th February - 2nd March
2023-2024 season: 160cm on 21st-26th March
2022-2023 season: 160cm on 11th February
2021-2022 season: 220cm on 23rd February - 14th March
2020-2021 season: 230cm on 13th-19th March
2019-2020 season: 150cm on 18th February - 29th March
2018-2019 season: 150cm on 14th-20th March
2017-2018 season: 220cm on 18th February - 7th March
2016-2017 season: 220cm on 21st February - 9th April
2015-2016 season: 150cm on 10th-13th February
2014-2015 season: 240cm on 14th February - 19th March
Resources
Weather & snowfall (Japan Meteorological Agency) [open in new window]
Introduction to the region
Nagano Prefecture is located in the Chubu region of the main island of Honshu. It is one of only eight landlocked prefectures in Japan, bordered by Niigata, Gunma, Saitama, Yamanashi, Shizuoka, Aichi, Gifu, and Toyama.
Nagano Prefecture is sometimes referred to as 'the roof of Japan' because of the steep, rugged terrain of the many 2,000-3,000m mountains that comprise the Japan Alps. The Northern Alps are located along the northwestern region bordering Gifu and Toyama. The Central Alps are in the southwestern region, and the Southern Alps are along the southeastern border.
After Hokkaido, Nagano Prefecture is home to the second-largest number of ski areas in Japan. It has multiple world-class winter sports resorts within its boundaries, and some were venues for the main events of the 1998 Nagano Winter Olympics. There are ski areas throughout the mountains of Nagano Prefecture, but the majority are in the northern and central regions.
Kaida Kogen Mia is one of 2 ski areas currently operating in Kiso Town. The other is Kiso Fukushima.
About the information on this page
SnowJapan independently researches, checks and updates the information on this page at least once each year, in the lead-up to every ski season. We also update it whenever we become aware of other changes. The information published on SnowJapan is based on independent research using official Japanese-language sources and is not supplied by ski areas. If you are planning to visit a ski area, we recommend checking the official ski area website for the latest operational information. We take great care to keep the information on SnowJapan accurate and up to date. However, SnowJapan accepts no responsibility for decisions made based on information published on this website.
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