Elite Performances
27 performances met the MileSplit US Second Team standard.
| HS Girls | Mark | Athlete | Team |
|---|---|---|---|
| 4x200 Meter Relay Finals | 1:46.50 | Relay Team | Bolingbrook |
| 4x200 Meter Relay Finals | 1:47.20 | Relay Team | Batavia |
| 4x200 Meter Relay Finals | 1:49.10 | Relay Team | Winnetka (New Trier) |
| 4x400 Meter Relay Finals | 4:03.90 | Relay Team | Batavia |
| 4x400 Meter Relay Finals | 4:05.50 | Relay Team | Chicago (Whitney Young) |
| 4x400 Meter Relay Finals | 4:05.70 | Relay Team | LaGrange (Lyons) |
| 4x400 Meter Relay Finals | 4:06.30 | Relay Team | Lisle (Benet Academy) |
| 4x400 Meter Relay Finals | 4:08.90 | Relay Team | Hoffman Estates (Conant) |
| 4x400 Meter Relay Finals | 4:10.50 | Relay Team | Bolingbrook |
| 4x400 Meter Relay Finals | 4:10.70 | Relay Team | Downers Grove (South) |
| 4x800 Meter Relay Finals | 9:32.30 | Relay Team | LaGrange (Lyons) |
| 4x800 Meter Relay Finals | 9:32.60 | Relay Team | Lisle (Benet Academy) |
| 4x800 Meter Relay Finals | 9:41.40 | Relay Team | Chicago (Whitney Young) |
| 4x800 Meter Relay Finals | 9:43.60 | Relay Team | Hoffman Estates (H.S.) |
| 4x800 Meter Relay Finals | 9:48.40 | Relay Team | Geneva |
| 4x800 Meter Relay Finals | 9:48.60 | Relay Team | Downers Grove (South) |
| 4x800 Meter Relay Finals | 9:53.90 | Relay Team | Naperville (Neuqua Valley) |
| 4x800 Meter Relay Finals | 9:55.30 | Relay Team | Naperville (North) |
| 4x800 Meter Relay Finals | 9:56.20 | Relay Team | Mt. Prospect (Prospect) |
| HS Boys | Mark | Athlete | Team |
| 4x200 Meter Relay Finals | 1:32.80 | Relay Team | Naperville (Neuqua Valley) |
| 4x200 Meter Relay Finals | 1:33.10 | Relay Team | Batavia |
| 4x400 Meter Relay Finals | 3:28.60 | Relay Team | Naperville (Neuqua Valley) |
| 4x800 Meter Relay Finals | 8:04.30 | Relay Team | Geneva |
| 4x800 Meter Relay Finals | 8:06.70 | Relay Team | Naperville (Neuqua Valley) |
| 4x800 Meter Relay Finals | 8:10.20 | Relay Team | LaGrange (Lyons) |
| 4x800 Meter Relay Finals | 8:17.40 | Relay Team | Downers Grove (South) |
| 4x800 Meter Relay Finals | 8:21.80 | Relay Team | Des Plaines (Maine West) |