Elite Performances
20 performances met the MileSplit US Second Team standard.
| HS Girls | Mark | Athlete | Team |
|---|---|---|---|
| 4x200 Meter Relay Finals | 1:43.95 | Relay Team | Chicago (Kenwood) |
| 4x200 Meter Relay Finals | 1:41.80 | Relay Team | Chicago (Whitney Young) |
| 4x200 Meter Relay Finals | 1:47.49 | Relay Team | Crete (C.-Monee) |
| 4x200 Meter Relay Finals | 1:44.98 | Relay Team | Flossmoor (Homewood-F.) |
| 4x200 Meter Relay Finals | 1:44.45 | Relay Team | Chicago (South Shore International College Prep) |
| 4x200 Meter Relay Finals | 1:44.35 | Relay Team | Kankakee (Sr.) |
| 4x400 Meter Relay Finals | 4:10.97 | Relay Team | Flossmoor (Homewood-F.) |
| 4x400 Meter Relay Finals | 4:00.65 | Relay Team | Chicago (Kenwood) |
| 4x400 Meter Relay Finals | 3:57.30 | Relay Team | Chicago (Whitney Young) |
| 4x800 Meter Relay Finals | 9:51.29 | Relay Team | Chicago (St. Ignatius College Prep) |
| 4x800 Meter Relay Finals | 9:56.99 | Relay Team | Chicago (Marist) |
| HS Boys | Mark | Athlete | Team |
| 4x200 Meter Relay Finals | 1:34.12 | Relay Team | Chicago (Brooks) |
| 4x200 Meter Relay Finals | 1:34.29 | Relay Team | Deerfield (H.S.) |
| 4x200 Meter Relay Finals | 1:33.54 | Relay Team | Joliet (West) |
| 4x200 Meter Relay Finals | 1:33.01 | Relay Team | Crete (C.-Monee) |
| 4x200 Meter Relay Finals | 1:30.94 | Relay Team | Kankakee (Sr.) |
| 4x200 Meter Relay Finals | 1:28.88 | Relay Team | Chicago (Kenwood) |
| 4x400 Meter Relay Finals | 3:25.68 | Relay Team | Chicago (Kenwood) |
| 4x400 Meter Relay Finals | 3:25.61 | Relay Team | Kankakee (Sr.) |
| 4x800 Meter Relay Finals | 8:17.92 | Relay Team | Chicago (Kenwood) |