| IA | Iowa HS Record | 47.55 | Des Moines Roosevelt | 2015 | |
| # | Creek Classic Relays | 50.41 | Ryan, Levin, Fleck, Kerkhoff | Solon | 4/5/2019 | 
| PL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | HPL | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | West Branch | A | 54.80 | 
 | 
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 | 
 | 10 | 2 (1) | |||||
| 2 | Pekin | A | 55.92 | 
 | 
 | 
 | 
 | 8 | 2 (2) | |||||
| 3 | North Linn | A | 56.46 | 
 | 
 | 
 | 
 | 6 | 2 (3) | |||||
| 4 | BGM, Brooklyn | A | 57.65 | 
 | 
 | 
 | 
 | 5 | 2 (4) | |||||
| 5 | Durant | A | 1:00.35 | 
 | 
 | 
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 | 4 | 2 (5) | |||||
| 6 | North Linn | B | 1:00.38 | 
 | 
 | 
 | 
 | 1 (1) | ||||||
| 7 | West Liberty | A | 1:00.79 | 
 | 
 | 
 | 
 | 3 | 2 (6) | |||||
| 8 | Durant | B | 1:02.06 | 
 | 
 | 
 | 
 | 1 (2) | ||||||
| 9 | BGM, Brooklyn | B | 1:03.72 | 
 | 
 | 
 | 
 | 1 (3) | ||||||
| 10 | West Branch | B | 1:03.97 | 
 | 
 | 
 | 
 | 1 (4) | ||||||
| 11 | Iowa Valley | B | 1:09.09 | 
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 | 
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 | 2 | 1 (5) | |||||
| English Valleys | A | DNS | 
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| HPL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | North Linn | B | 1:00.38 | 
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 | 
 | ||||||
| 2 | Durant | B | 1:02.06 | 
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 | 
 | ||||||
| 3 | BGM, Brooklyn | B | 1:03.72 | 
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 | ||||||
| 4 | West Branch | B | 1:03.97 | 
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 | ||||||
| 5 | Iowa Valley | B | 1:09.09 | 
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 | 
 | 2 | 
| HPL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | West Branch | A | 54.80 | 
 | 
 | 
 | 
 | 10 | |||||
| 2 | Pekin | A | 55.92 | 
 | 
 | 
 | 
 | 8 | |||||
| 3 | North Linn | A | 56.46 | 
 | 
 | 
 | 
 | 6 | |||||
| 4 | BGM, Brooklyn | A | 57.65 | 
 | 
 | 
 | 
 | 5 | |||||
| 5 | Durant | A | 1:00.35 | 
 | 
 | 
 | 
 | 4 | |||||
| 6 | West Liberty | A | 1:00.79 | 
 | 
 | 
 | 
 | 3 | |||||
| English Valleys | A | DNS | 
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