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TrailJapanNagano Prefecture

OSJ ONTAKE50 2026

23.09.2026Otaki village (Japan)
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1’8856’184 m D+ ft D+

55 km34.2 miLONGlongest of 2 courses

At a glance

OSJ ONTAKE50 2026 took place on Wednesday 23 September 2026 in Otaki village (Nagano Prefecture, Japan). Two distances to choose from: 29 and 55 km.

Longest course: LONG, 55 km with 1’885 m D+ (34 m per km: hilly terrain).

The 2027 edition is expected on Wednesday 22 September 2027, date to be confirmed by the organiser. On Kliva, plan your pacing and nutrition for free, then send the plan to your watch.

Trail race taking place in the national forests at the foot of Mount Ontake (3,067 m). Participants run on unpaved forest roads normally closed to the public. The Long (55 km) and Middle (30 km)…
From the organiser

2 courses

  1. 29km18mi

    994 m D+3’261 ft D+

    avg 3%

    MIDDLE

    23.09.

    ITRA 1

  2. 55km34.2mi

    1’885 m D+6’184 ft D+

    avg 3%

    LONG

    23.09.

    ITRA 2

GPX trace not yet published.

Race plan

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Pacing, aid stations and fueling timed to your effort on OSJ ONTAKE50, in one roadbook.

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Otaki village (Japan)

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