| IA | Iowa HS Record | 41.33 | Dan McMahon, Jason Ringena, Mike Richards, Merrill Coleman | Iowa City, City High | 1996 |
| # | Indee Boys Invite | 44.79 | Connor Sindt, Lathan Cooper, James Heilman, Jordan Michels | Benton Community | 2016 |
| PL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Maquoketa Valley | A | 49.41 |
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10 | |||||
| 2 | Independence | A | 51.01 |
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8 | |||||
| 3 | Independence | B | 51.64 |
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| 4 | Starmont | B | 55.98 |
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6 | |||||
| Starmont | A | DQ |
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| PL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Maquoketa Valley | A | 49.41 |
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10 | |||||
| 2 | Independence | A | 51.01 |
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8 | |||||
| 3 | Independence | B | 51.64 |
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| 4 | Starmont | B | 55.98 |
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6 | |||||
| Starmont | A | DQ |
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