| IA | Iowa HS Record | 47.55 | Des Moines Roosevelt | 2015 | 
| PL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | 
|---|---|---|---|---|---|---|---|---|
| 1 | Newton | A | 1:03.64 | |||||
| 2 | South Tama | A | 1:04.21 | |||||
| GMG | A | DNS | ||||||
| BCLUW | A | DNS | ||||||
| Lisbon | A | DNS | ||||||
| East Marshall | A | DNS | ||||||
| Ankeny High School | A | DNS | ||||||
| Oelwein | A | DNS | 
| PL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | 
|---|---|---|---|---|---|---|---|---|
| 1 | Newton | A | 1:03.64 | |||||
| 2 | South Tama | A | 1:04.21 | |||||
| GMG | A | DNS | ||||||
| BCLUW | A | DNS | ||||||
| Lisbon | A | DNS | ||||||
| East Marshall | A | DNS | ||||||
| Ankeny High School | A | DNS | ||||||
| Oelwein | A | DNS |