Course
Single-track forest and alpine trails out of Oregon Gulch near Easley Hot Springs, north of Ketchum. The half marathon follows the Big Wood River, climbs the Oregon Fox Connector and loops back for a fast finish, gaining 2,450 ft to a high point of 7,600 ft. The 55K adds circuits around Fox Peak, with 6,781 ft of gain and a 8,650 ft high point. Snow is possible in early October.
Key dates
- ★Race dayOctober 2027 · date to be announced
About
A fall trail running event held in the mountains of Sun Valley featuring a half marathon and 55km ultra marathon on scenic single-track trails. The event supports local charities and takes place during peak autumn colors in the Idaho backcountry.
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Moscow Mountain Madness
On Idaho's Moscow Mountain since 1978
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A confirmed date shows its day; a provisional one shows only its month, because we won't claim a day we don't have. This page is rebuilt every night from the RunCalendar catalogue.