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.
Estimate your finish from your ITRA index
Estimate (no finisher data for this race)
Enter your ITRA performance index to get an estimated finish time, aid-station splits and cutoff margins. This race has no finisher ITRA data, so it uses the transfer model: your predictions for the 205 races that do have finisher data, scaled by distance and elevation gain (km-effort) — the same calculation as the TRAIL STATUS app. Nothing is saved or sent.
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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.
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 (85.4 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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