| 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 | 
 | 
 | 
 | 
 | 10 | |||||
| 2 | Independence | A | 51.01 | 
 | 
 | 
 | 
 | 8 | |||||
| 3 | Independence | B | 51.64 | 
 | 
 | 
 | 
 | ||||||
| 4 | Starmont | B | 55.98 | 
 | 
 | 
 | 
 | 6 | |||||
| Starmont | A | DQ | 
 | 
 | 
 | 
 | 
| PL | JD | Team | Squad | Time | Athlete 1 | Athlete 2 | Athlete 3 | Athlete 4 | Pts | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Maquoketa Valley | A | 49.41 | 
 | 
 | 
 | 
 | 10 | |||||
| 2 | Independence | A | 51.01 | 
 | 
 | 
 | 
 | 8 | |||||
| 3 | Independence | B | 51.64 | 
 | 
 | 
 | 
 | ||||||
| 4 | Starmont | B | 55.98 | 
 | 
 | 
 | 
 | 6 | |||||
| Starmont | A | DQ | 
 | 
 | 
 | 
 |