Mainly Marathons Prairie Series - Day 5
Sioux City, Iowa, United States
May 13, 2026 - Wednesday
5k, 10k, 50k, Half-marathon, Marathon, Ultra
Video
Race Information
Prairie Series is organized by Mainly Marathons, one of the largest race organizers in the US, with races in all 50 states. You can participate in one race or take the challenge to complete the whole series!
Mainly Marathons races are designed for runners who run long and run often. All finishers in races longer than half marathon get a custom metal-stamped nameplate!
Related Events
Mainly Marathons Prairie Series - Day 1
Date: May 8, 2026 - Friday
Size: 1 - 100 participants
Location: Miami, Oklahoma
Mainly Marathons Prairie Series - Day 2
Date: May 9, 2026 - Saturday
Size: 1 - 100 participants
Location: Saint Joseph, Missouri
Mainly Marathons Prairie Series - Day 3
Date: May 10, 2026 - Sunday
Size: 1 - 100 participants
Location: Hiawatha, Kansas
Mainly Marathons Prairie Series - Day 4
Date: May 11, 2026 - Monday
Size: 1 - 100 participants
Location: South Sioux City, Nebraska
Mainly Marathons Prairie Series - Day 5
Date: May 13, 2026 - Wednesday
Size: 1 - 100 participants
Location: Sioux City, Iowa
Mainly Marathons Prairie Series - Day 6
Date: May 13, 2026 - Wednesday
Size: 1 - 100 participants
Location: Baltic, South Dakota
Mainly Marathons Prairie Series - Day 7
Date: May 14, 2026 - Thursday
Size: 1 - 100 participants
Location: Breckenridge, Minnesota
Run Pick of the Month – Christie Clinic Illinois Race Weekend
Run the 17th annual Illinois Race Weekend, happening April 2026.
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Race Facts
Race Size: 1 - 100
Elevation: Fast and Flat
Course Type: Trail
Boston Qualifier: No
Kids Run: No
Where to Stay
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