| Event | Rank | Mark | By | Meet |
| | | National Elites above. State Elites below | | |
| B-400 | 1 | 51.35 | Lathrop, Gus (2015) (East Richland, IL) | Robinson Boys Invitational(IL), 2015-04-24(#1) |
| B-400 | 2 | 51.41 | Culter, Alex (2017) (Mt. Zion, IL) | IL 2A Mattoon Boys Sectional(IL), 2015-05-21(#2) |
| B-400 | 3 | 52.04 | Bolfing, Austin (2015) (Taylorville, IL) | Capital Area Classic(IL), 2015-05-18(#3) |
| B-400 | 4 | 52.07 | Bopp, Parker (Robinson, IL) | Robinson Boys Invitational(IL), 2015-04-24(#2) |
| | | | | |
| | | | | |
| | | | | |
| | | | | |
| | | See more performances for B-400 | | |
Get US#1 updates on Facebook
