6 Preliminary Heats, using Lanes 2-6; Competitors with 8 fastest times advance to 2-section Final (seeded in lanes 3-6)
| F | Field House Record | 46.07 | Kevin Little | US West TC | 1996 |
| M | Meet Record | 46.07 | Kevin Little | US West TC | 1996 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 3 | Charles WHITCOMB | Air Force |
51.47 |
| 4 | Trace SPIRES | Wichita State |
51.31 |
| 5 | Toby PENNER | Wichita State |
50.59 |
| 6 | Nathan RIDER | Sacramento St. |
51.01 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 3 | Cole ROMIG | Colorado |
DNS |
| 4 | JD PRINSLOO | Wichita State |
50.55 |
| 5 | Eli HAZLETT | BYU |
48.17 |
| 6 | RJ HUTCHISON | Wichita State |
50.02 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 4 | Charles WHITCOMB | Air Force |
52.20 |
| 5 | Eli HAZLETT | BYU |
47.31 |
| 6 | Toby PENNER | Wichita State |
50.35 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 3 | Trace SPIRES | Wichita State |
NT |
| 4 | Ruben GARCIA | Sacramento St. |
NT |
| 5 | JD PRINSLOO | Wichita State |
47.61 |
| 6 | Cole ROMIG | Colorado |
49.83 |
| Lane | Athlete | Team | Seed |
|---|---|---|---|
| 3 | Nathan RIDER | Sacramento St. |
NT |
| 4 | Luke PORTER | Wichita State |
NT |
| 5 | Zac LARRIER | Air Force |
47.68 |
| 6 | RJ HUTCHISON | Wichita State |
49.12 |