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Ultra Marathons Near Idaho
Showing the next 50 runs that match your filters
Featured
Grand Teton Half Marathon & 5K
Get $10 Off - Use Code VRRUNGUIDES
Date: Jun 5-6, 2026 - Friday to Saturday
Size: 1,000 - 5,000 participants
Location: Moose Wilson Road, Wyoming
Featured
Halfway Half Marathon & 10K
East Oregon's Frontier Race!
Date: May 3, 2026 - Sunday
Size: 1 - 100 participants
Location: Halfway, Oregon
The Spitfire Ultra
Date: Apr 18, 2026 - Saturday
Size: 100 - 500 participants
Location: Menan, Idaho
Spokane River Run
Date: Apr 19, 2026 - Sunday
Size: 1,000 - 5,000 participants
Location: Nine Mile Falls, Washington
Weiser River Trail 50k
Date: Apr 25, 2026 - Saturday
Size: 1 - 100 participants
Location: Council, Idaho
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Salt Flats Endurance Runs
Date: May 1-2, 2026 - Friday to Saturday
Size: 1 - 100 participants
Location: Wendover, Utah
L.O.S. - Last One Standing
Date: May 23-25, 2026 - Saturday to Monday
Size: 1 - 100 participants
Location: Spokane, Washington
Backyard Ultra of Northern Utah
Date: May 30-31, 2026 - Saturday to Sunday
Size: 1 - 100 participants
Location: Mantua, Utah
Scout Mountain Ultras
Date: Jun 5-6, 2026 - Friday to Saturday
Size: 100 - 500 participants
Location: Bannock County, Idaho
Marsh Peak Madness: Endurance & Speed Event
Get 10% Off - Use Code Mad Mash 10
Date: Jun 6, 2026 - Saturday
Size: 100 - 500 participants
Location: Maeser, Utah
Hiawatha Trail Run
Get 10% Off - Use Code RUNGUIDES2026
Date: Jun 7, 2026 - Sunday
Size: 500 - 1,000 participants
Location: Taft, Montana
Hidden Oasis Ultras
Date: Jun 13, 2026 - Saturday
Size: 100 - 500 participants
Location: Elkwater, Alberta
Moonlight on Mt Ascension Trail Run
Date: Jun 19, 2026 - Friday
Size: 1 - 100 participants
Location: Helena, Montana
River of No Return Endurance Runs
Date: Jun 20, 2026 - Saturday
Size: 100 - 500 participants
Location: Challis, Idaho
Logan Peak Trail Run
Date: Jun 20, 2026 - Saturday
Size: 100 - 500 participants
Location: River Heights, Utah
Montana Spartan Weekend
Date: Jun 20-21, 2026 - Saturday to Sunday
Size: 500 - 1,000 participants
Location: Sedan, Montana
Copper Kings 100
Date: Jun 26-27, 2026 - Friday to Saturday
Size: 100 - 500 participants
Location: Butte, Montana
Tackle the Toad
Date: Jun 27, 2026 - Saturday
Size: 100 - 500 participants
Location: Nelson, British Columbia
Sinister 7 Ultra
Date: Jul 11-12, 2026 - Saturday to Sunday
Size: 1,000 - 5,000 participants
Location: Crowsnest Pass, Alberta
Beaverhead Endurance Runs
Date: Jul 11, 2026 - Saturday
Size: 100 - 500 participants
Location: Dillon, Montana
Teton Mountain Runs
Date: Jul 11-12, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Teton Village, Wyoming
Yellowstone Half Marathon and Trail Races
Date: Jul 11, 2026 - Saturday
Size: 1 - 100 participants
Location: West Yellowstone, Montana
Bob Marshall Trail Races
Date: Jul 18, 2026 - Saturday
Size: 1 - 100 participants
Location: Seeley Lake, Montana
The Divide Trail Race
Date: Jul 18, 2026 - Saturday
Size: 1 - 100 participants
Location: Butte, Montana
Standhope Ultra Challenge
Date: Jul 24-26, 2026 - Friday to Sunday
Size: 100 - 500 participants
Location: Ketchum, Idaho
Speedgoat Mountain Races by UTMB
Date: Jul 24-25, 2026 - Friday to Saturday
Size: 500 - 1,000 participants
Location: Sandy, Utah
The Divide Trail Race
Date: Jul 25, 2026 - Saturday
Size: 1 - 100 participants
Location: Butte, Montana
Yellowstone Half Marathon and Trail Races
Date: Aug 1, 2026 - Saturday
Size: 1 - 100 participants
Location: West Yellowstone, Montana
Skyline Mountain Marathon
Date: Aug 8, 2026 - Saturday
Size: 100 - 500 participants
Location: Eden, Utah
Elephant Rock Trail Run
Date: Aug 8, 2026 - Saturday
Size: 1 - 100 participants
Location: Bountiful, Utah
Kat'cina Mosa 100K Mountain Run
Date: Aug, 2026 (TBD)
Size: 1 - 100 participants
Location: Springville, Utah
The Divide 200
Date: Aug 10-14, 2026 - Monday to Friday
Size: 1 - 100 participants
Location: Pincher Creek No. 9, Alberta
Harriman 25K/50K Trail Run
Date: Aug 15, 2026 - Saturday
Size: 100 - 500 participants
Location: Island Park, Idaho
Black Spur Ultra
Date: Aug 22-23, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: Kimberley, British Columbia
Dusk to Dawn Relay + Ultra
Date: Sep 4-5, 2026 - Friday to Saturday
Size: 100 - 500 participants
Location: Tooele County, Utah
Wasatch 100
Date: Sep 11-12, 2026 - Friday to Saturday
Size: 100 - 500 participants
Location: Kaysville, Utah
Lost Soul Ultra Marathon
Date: Sep 11-12, 2026 - Friday to Saturday
Size: 100 - 500 participants
Location: Lethbridge, Alberta
Idaho Mountain Trail Ultra Festival
Date: Sep 19-20, 2026 - Saturday to Sunday
Size: 100 - 500 participants
Location: McCall, Idaho
Gaspin Through The Aspens
Date: Sep 19, 2026 - Saturday
Size: 100 - 500 participants
Location: Alpine, Utah
Mainly Marathons Northwest Series - Day 3
Date: Sep 21, 2026 - Monday
Size: 1 - 100 participants
Location: Clarkston, Washington
Mainly Marathons Northwest Series - Day 4
Date: Sep 22, 2026 - Tuesday
Size: 1 - 100 participants
Location: Clarkston, Washington
Mainly Marathons Northwest Series - Day 5
Date: Sep 23, 2026 - Wednesday
Size: 1 - 100 participants
Location: Lewiston, Idaho
Mainly Marathons Northwest Series - Day 6
Date: Sep 24, 2026 - Thursday
Size: 1 - 100 participants
Location: Lewiston, Idaho
The Bear 100 Miler
Date: Sep 25, 2026 - Friday
Size: 100 - 500 participants
Location: River Heights, Utah
DC Peaks
Get $20.00 Off - Use Code RUNGUIDES
Date: Oct 2-3, 2026 - Friday to Saturday
Size: 100 - 500 participants
Location: North Salt Lake, Utah
Legends Never Die
Date: Oct 3, 2026 - Saturday
Size: 100 - 500 participants
Location: Ketchum, Idaho
Antelope Island Fall Classic
Date: Oct 10, 2026 - Saturday
Size: 100 - 500 participants
Location: Davis County, Utah
Sasquatch Shuffle 50K, 30K, & 10K
Date: Oct 10, 2026 - Saturday
Size: 1 - 100 participants
Location: McCall, Idaho
Pony Express Trail Run
Date: Oct 16, 2026 - Friday
Size: 1 - 100 participants
Location: Vernon, Utah
City to Sky 50K
Date: Oct 18, 2026 - Sunday
Size: 100 - 500 participants
Location: Missoula, Montana
The Dark: 24 Hours Underground
Date: Oct 31-Nov 1, 2026 - Saturday to Sunday
Size: 1 - 100 participants
Location: Crowsnest Pass, Alberta
Wilson Creek Frozen 50k
Date: Jan 23, 2027 - Saturday
Size: 100 - 500 participants
Location: Owyhee County, Idaho
