Running races in Idaho in Apr 2027

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  Serenata Shuffle

  Sat 10 Apr 2027 · Boise, ID · Marathon · Half Marathon · 10K · 5K

  Runs to benefit Boise's Serenata Community Orchestra

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  Spitfire Ultra Trail Challenge

  Sat 17 Apr 2027 · Menan, ID · The FAT 55K Ultra · Epic 30K Challenge · Fab 12K Challenge · Bad Ash 5K Trail

  Loops North Menan Butte, one of Earth's biggest tuff cones

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  Hauser Lake Icebreaker Run 5k/10k

  Sat 17 Apr 2027 · Hauser, ID · 10k · 5K

  Circles the shoreline of Hauser Lake

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  Race to Robie Creek

  Sat 17 Apr 2027 · Boise, ID · Marathon

  A legendary half marathon climbing through Idaho foothills

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  Falls2Falls

  April 2027 · Twin Falls, ID · Half Marathon · 5.2 Mile · 5K
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  Weiser River Trail

  Sat 24 Apr 2027 · Weiser, ID · Trail Length

  Idaho's longest rail-trail run, beside the Weiser River

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  UWNI Spring Dash

  Sat 24 Apr 2027 · Coeur d'Alene, ID · Half Marathon · 10K · 5K

  Once a Bloomsday seeding race, since 1982

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Every race here is published by its organiser; RunCalendar checks the date and the entry window against the organiser's own page and rebuilds this calendar every night. A confirmed date shows its day; a provisional one shows only its month. Last updated 22 October 2026.