| IA | Iowa HS Record | 41.33 | Dan McMahon, Jason Ringena, Mike Richards, Merrill Coleman | Iowa City, City High | 1996 |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 3 | Oelwein | B | Detemmerman | Lamphier | Ladeburg | Sperfslage | DQ |
| 4 | Newton | B | Hammons | Tamburo | Galanakis | Holdefer | 52.00 |
| 5 | Lisbon | B | Kirk | Harrer | Ross | Lehmer | 47.00 |
| 6 | BCLUW | B | Critchfield | Garber | Paxson | Farnsworth | DNS |
| Lane | Team | Squad | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Seed |
|---|---|---|---|---|---|---|---|
| 1 | East Marshall | A | Kasal | Sinn | Crouse | Novotny | 51.00 |
| 2 | Newton | A | Biondi | Stewart | Henderson | Bauer | 47.00 |
| 3 | BCLUW | A | Dagger-Hoffman | Bracy | Hughes | Leimbacher | 47.00 |
| 4 | Lisbon | A | Decious | Bennett | Caspers | Speidel | 46.05 |
| 5 | South Tama | A | Wanatee | Slagle | Gentil | Avalos | 46.80 |
| 6 | Oelwein | A | Rownd | Rogers | Cockerham | Kiel | 49.48 |
| 7 | GMG | A | Ratliff | Woodbury | Jackson | Duden | 55.91 |