| MR | Stan Morgan | 42.34 | Kent, Gilchrist, Kent, Day | Harrisburg | 2018 |
| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 2 | Boiling Springs | A | 45.17 | Arctic Blast Invitational |
| 3 | Mechanicsburg Area | A | 44.43 | Palmyra HS vs. Mechanicsburg HS |
| 4 | Red Land | A | DQ | 64th Annual Cedar Cliff Relays J |
| 5 | Lower Dauphin | A | 45.54 | Lower Dauphin HS vs. Mechanicsbu |
| Lane | Team | Squad | Seed | Note |
|---|---|---|---|---|
| 1 | East Pennsboro Area | A | 43.70 | 16th Cy Fritz Open @ Millersvill |
| 2 | Carlisle | A | 43.62 | Shippensburg 98th Roddick HS Inv |
| 3 | Cumberland Valley | A | 41.43 | Penn Relays Carnival Presented b |
| 4 | Fairfield Area | A | 43.6h | |
| 5 | New Oxford | A | 43.69 | The Miller Sports Construction B |
| 6 | Chambersburg | A | 44.0h | CBG & CD at CV |