CENTRAL ALPS SKYLINE JAPAN CASJ 90k 2026
Also known as: Central Alps Skyline Japan
A mountain race based in Komagane, Nagano, that runs through the night along the Central Alps ridgelines across Komagane, Ina and Miyada, over a series of peaks and valleys. The event traces its roots to the Nishikoma mountain marathon first held in 1925.
The course tops out at 2,095 m (low point -1 m). There are 4 big climbs: 1,132 m around 0–21 km; 1,367 m around 36–47 km; 941 m around 61–64 km; 950 m around 66–78 km. The longest descent drops 2,096 m around 47 km at about 15% on average. Only about 30% is gentle (under 5% grade); most of it is climbing or descending. In 2026, 87% of starters finished. The median finish was about 18 h, through one night.
Predict your finish from your ITRA index
Enter your ITRA performance index to get your finish time, aid-station splits and cutoff margins from the results of 40 finishers of this race — the same model as the TRAIL STATUS app. Nothing is saved or sent.
The app adds predictions from your training log (Strava), race-day pacing and more. Free, no sign-up.
Predict in detail from my Strava trainingOverview
- Date
- Sat, 4 Jul 2026
- Start
- 18:00
- Location
- Nagano, Japan
- Distance
- 86.7 km
- Elevation gain
- 5,285 m
- Time limit
- 26h
- ITRA
- 100K
- Official website
- www.centralalps-kmpn.com
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 9.4 km | Aid 1養命酒工場（水のみ） | 9.4 km | — |
| 2 | 16 km | Aid 2古城公園（エイド） | 6.6 km | — |
| 3 | 26.3 km | Aid 3池山林道終点（水のみ） | 10.3 km | — |
| 4 | 33.2 km | Aid 4森と水のアウトドア広場体験（エイド・第1関門） | 6.9 km | Day 2 04:0010h |
| 5 | 38 km | Aid 5宮田城址（水のみ） | 4.8 km | — |
| 6 | 43.5 km | Aid 6宮田高原（エイド） | 5.5 km | — |
| 7 | 52.5 km | Aid 7伊那スキーリゾート上部（水のみ） | 9 km | — |
| 8 | 65 km | Aid 8伊那スキーリゾート（エイド・ドロップバッグ） | 12.5 km | Day 2 13:0019h |
| 9 | 71 km | Aid 9犬田切林道（水のみ） | 6 km | — |
| 10 | 77.5 km | Aid 10宮田高原 2回目（エイド） | 6.5 km | — |
| F | 86.7 km | FinishFINISH 駒ヶ根ファームス | 9.2 km | Day 2 20:0026h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2026 results
203 starters, 176 finishers (86.7% finish rate). Finish times of those who finished:
- Fastest
- 9h 53m
- Top 10%
- 13h 10m
- Top 25%
- 15h 15m
- Median
- 17h 53m
- Top 75%
- 19h 53m
- Top 90%
- 22h 12m
- Last finisher
- 25h 50m
"Top 25%" means one in four finishers had crossed the line by this time.
Years with a different course or different cutoffs are not directly comparable.
Practice courses
See the course on the Runnable map ↗
Runnable has practice courses on this race's trails, split into sections to run and sections to walk (pages in Japanese).
- CASJ 90k (83.9 km)
Other races
- Shinetsu Five Mountains 100mile 2026Mon, 21 Sep 2026 · Nagano, Japan · 163 km
- Shinetsu Five Mountains 110km 2026Tue, 22 Sep 2026 · Nagano, Japan · 112 km
- OSJ KOUMI 100 2026Sun, 11 Oct 2026 · Nagano, Japan · 165 km
- NOZAWA 65 km 2026Sun, 19 Jul 2026 · Nagano, Japan · 65 km
- OKUSHINANO 100 100km 2026Sat, 6 Jun 2026 · Nagano, Japan · 100 km
- OSJ ONTAKE100 100K 2026Sun, 19 Jul 2026 · Nagano, Japan · 107 km
From your training log, TRAIL STATUS estimates your finish time, aid-station splits and cutoff margins for this race.
Predict my raceCompiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
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