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1,670 marathons found for Ultra marathon, United States. Keep the list broad first, then tighten the filters when a race looks realistic.





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Anderson, Indiana, United States
10OCT
ULTRA
4 Hours in the Woods - Endurance Style Fun Run - Sponsored by Community In Motion
Anderson, Indiana, United States
October 10, 2026 OCT
United States
10OCT
ULTRA
45th Le Grizz 50 Mile Ultramarathon - 50mi
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
4th Duff Dog Backyard Ultra - 29h
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
5th Devil's Den Ultra 12h - 12h
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
5th Devil's Den Ultra 30h - 30h
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
5th Lake Yahou 50k - 50km
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
5th Storm the Day (Sunrise to Sunset) - 11h
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
6th DeClue Loops 50 km Trail Race - 50km
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
6th Sasquatch Shuffle TX 50 km Race - 50km
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
6th The Devils Race Track Backyard - 13h
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
6th The Golden 6 Hour - 6h
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
7th That's No Moon Ultras 50K - 50km
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
8th Arrowhead 6 Hour Endurance Run - 6h
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
8th Blue Ridge 50km Ultra - 50km
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
8th Hainesport Endurance Run - 48h
United States
October 10, 2026 to October 12, 2026 OCT
United States
10OCT
ULTRA
8th Midstate Massive 50 Mile Ultra Trail - 50mi
United States
October 10, 2026 OCT
United States
10OCT
ULTRA
9th The Ultra Bird 6 Hour Trail Race - 6h
United States
October 10, 2026 OCT
Gwinn, Michigan, United States
10OCT
ULTRA
Anderson Lake Backyard Ultra
Gwinn, Michigan, United States
October 10, 2026 OCT
Syracuse, Utah, United States
10OCT
ULTRA
Antelope Island Fall Classic
Syracuse, Utah, United States
October 10, 2026 OCT
Bastrop, Texas, United States
10OCT
ULTRA
Autumn Harvest Trail Run | Bastrop Last Standing • 50K • 20-Miler • 10-Miler • 5-Miler • Full • Half • 10K • 5K
Bastrop, Texas, United States
October 10, 2026 OCT
Saint Charles, Missouri, United States
10OCT
ULTRA
Backyard Ultra in New Town (Oct 10 8:00AM)
Saint Charles, Missouri, United States
October 10, 2026 OCT
Dodgeville, Wisconsin, United States
10OCT
ULTRA
Broken Rock Trail Runs
Dodgeville, Wisconsin, United States
October 10, 2026 OCT
Akron, Ohio, United States
10OCT
ULTRA
Canal Corridor Endurance Run
Akron, Ohio, United States
October 10, 2026 OCT
Canandaigua, New York, United States
10OCT
ULTRA
CanLake Ultras
Canandaigua, New York, United States
October 10, 2026 OCT

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