OSJ Ontake SkyRace
The OSJ Ontake SkyRace was an international skyrunning competition held for the first time in 2006 and till 2014. It ran every year in Nagano in August. The race was valid for the Skyrunner World Series six times consecutively from 2006 to 2011.
Races
OSJ Ontake SkyRace, a SkyRace OSJ Ontake Ultra Trail, an Ultra trailOSJ Ontake SkyRace
| Edition | Year | Date | Men's winner | Women's winner |
| 1 | 2006 | 25 June |  |