| Event | Rank | Mark | By | Meet |
| B-Mile | 1 | 3:59.38 | Maton, Matthew (2015) (Summit, OR) (US#1) | Oregon Twilight(OR), 2015-05-08(#3) |
| B-Mile | 2 | 4:14.20 | Muhumed, Ahmed (2017) (West Salem, OR) (US#85) | Jesuit Twilight Relays(OR), 2015-05-01(#6) |
| B-Mile | 3 | 4:15.03 | Mestler, Jackson (2016) (Henry D Sheldon, OR) | Prefontaine Classic(OR), 2015-05-29(#10) |
| B-Mile | 4 | 4:17.24 | Ollar, Roman (2016) (West Linn, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#9) |
| B-Mile | 5 | 4:17.61 | Sultessa, Roba (2015) (Cleveland, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#11) |
| | | National Elites above. State Elites below | | |
| B-Mile | 6 | 4:18.36 | Khaira, Maneet (2015) (Sunset, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#12) |
| B-Mile | 7 | 4:19.12 | Tooley, Jean Baptiste (2015) (Central Catholic, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#13) |
| B-Mile | 8 | 4:19.38 | Schumacher, Joshua (2018) (Jesuit Portland, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#14) |
| B-Mile | 9 | 4:19.58 | Vail, Walter (2016) (Crater, OR) | Portland Track Festival(OR), 2015-06-14(#6) |
| B-Mile | 10 | 4:19.66 | Bloomer, Reilly (2015) (South Eugene, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#16) |
| B-Mile | 11 | 4:20.78 | Ollar, Grayson (2016) (West Linn, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#17) |
| B-Mile | 12 | 4:23.11 | McGowen, Matthew (2015) (Crescent Valley, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#21) |
| B-Mile | 13 | 4:24.22 | Morrell, Thomas (2015) (Centennial, OR) | Jesuit Twilight Relays(OR), 2015-05-01(#22) |
| B-Mile | 14 | 4:26.16 | Nyamu, Murimi (2016) (Forest Grove, OR) | Portland Track Festival(OR), 2015-06-14(#1) |
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