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Ultra Marathons Near Illinois
Showing the next 20 runs that match your filters
Featured
Lincoln-Way Half Marathon & 10K
Get $5 Off - Use Code RUNGUIDE5
Date: May 2, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Frankfort, Illinois
Featured
5K For CATCH
5K with medals, open to everyone!
Date: Apr 4, 2026 - Saturday
Size: 100 - 500 participants
Location: Northbrook, Illinois
Save the Drama for your Llama 6 Hour Trail Run
Date: Apr 4, 2026 - Saturday
Size: 1 - 100 participants
Location: La Porte, Indiana
Mainly Marathons Riverboat Series - Day 7
Date: Apr 19, 2026 - Sunday
Size: 1 - 100 participants
Location: Clarksburg, Illinois
Prickly Pine Jackpot 24 Hour Solo/Relay
Date: May 2-3, 2026 - Saturday to Sunday
Size: 1,000 - 5,000 participants
Location: Dousman, Wisconsin
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Ice Age Trail 50
Date: May 9, 2026 - Saturday
Size: 1,000 - 5,000 participants
Location: Walworth County, Wisconsin
MoMoFo100k and 20 mile Fun Run
Date: Jun 5-6, 2026 - Friday to Saturday
Size: 100 - 500 participants
Location: Martinsville, Indiana
Dances With Dirt Devil's Lake
Date: Jul 11, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Sauk County, Wisconsin
Mainly Marathons Heartland Series - Day 3
Date: Jul 13, 2026 - Monday
Size: 1 - 100 participants
Location: Portage, Indiana
Mainly Marathons Heartland Series - Day 4
Date: Jul 14, 2026 - Tuesday
Size: 1 - 100 participants
Location: Fulton, Illinois
Mainly Marathons Heartland Series - Day 5
Date: Jul 15, 2026 - Wednesday
Size: 1 - 100 participants
Location: Clinton, Iowa
Trail Golf Endurance Challenge
Date: Jul, 2026 (TBD)
Size: 100 - 500 participants
Location: Valparaiso, Indiana
United Center Challenge
Date: Aug, 2026 (TBD)
Size: 1 - 100 participants
Location: Chicago, Illinois
Chupacabra Endurance 10-hour Run
Date: Aug 29, 2026 - Saturday
Size: 100 - 500 participants
Location: Westville, Indiana
Tryon Farm 8 Miler, 25k & 50k
Date: Sep, 2026 (TBD)
Size: 100 - 500 participants
Location: Michigan City, Indiana
Des Plaines River Trail Races
Date: Oct 10, 2026 - Saturday
Size: 500 - 1,000 participants
Location: Vernon Hills, Illinois
DeClue Loops Trail Race
Date: Oct 10, 2026 - Saturday
Size: 100 - 500 participants
Location: Wildwood, Missouri
Glacial Trail 50M 50K
Date: Oct 11, 2026 - Sunday
Size: 100 - 500 participants
Location: Town of Greenbush, Wisconsin
Arctic Frog Endurance Runs
Date: Dec, 2026 (TBD)
Size: 100 - 500 participants
Location: Libertyville, Illinois
John Dick Memorial 50K
Date: Feb, 2027 (TBD)
Size: 100 - 500 participants
Location: Dousman, Wisconsin
Tombstone 30k/50k/50 mile
Date: Mar, 2027 (TBD)
Size: 100 - 500 participants
Location: Chesterton, Indiana
American Bottoms 100
Date: Mar, 2027 (TBD)
Size: 100 - 500 participants
Location: Columbia, Illinois
