Mainly Marathons Prairie Series - Day 5

Sioux City, Iowa, United States

May, 2027 (TBD)

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!

👍 Run Pick of the Month: Milwaukee Lakefront Marathon

📍Milwaukee - October 3-4, 2026

💸 SAVE 10% On Your Entry. Use Code RGMLM26

😄 Why We Like This Run
✅PR-friendly terrain
✅ Incredible community and high-fives at every hydration station
✅ Post-race celebration with local brews, great food, and a lakefront festival that only Milwaukee can throw

Ready to experience one of the most scenic courses in the Midwest? Enjoy a fast, flat, and famously beautiful run along the stunning shores of Lake Michigan. Whether you are aiming for a Boston qualifying time or crossing your first finish line, this race offers the perfect backdrop for your next big achievement.

With options from the 5K through to the Marathon, every mile is designed to keep you moving and inspired.

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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

Use this map to find hotels and airbnb accommodation near this race location.