| POS | Rank | Heat | BIB | ATHLETE | COUNTRY | RESULTS |
|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 3059 | Kerron Clement |
USA |
48.26 Q SB |
| 2 | 1 | 2 | 2631 | Annsert Whyte |
JAM |
48.32 Q PB |
| 3 | 1 | 3 | 2581 | Thomas BARR |
IRL |
48.39 Q NR |
| 4 | 2 | 2 | 2872 | Javier Culson |
PUR |
48.46 Q SB |
| 5 | 2 | 3 | 2686 | Aron Kipchumba KOECH |
KEN |
48.49 Q PB |
| 6 | 3 | 2 | 2999 | Yasmani COPELLO |
TUR |
48.61 q |
| 7 | 4 | 2 | 2382 | Rasmus MÄGI |
EST |
48.64 q |
| 8 | 3 | 3 | 3095 | Byron ROBINSON |
USA |
48.65 PB |
| 9 | 4 | 3 | 2807 | Karsten WARHOLM |
NOR |
48.81 |
| 10 | 2 | 1 | 2699 | Bonface Mucheru |
KEN |
48.85 Q SB |
| 11 | 3 | 1 | 2357 | Sergio FERNÁNDEZ |
ESP |
48.87 NR |
| 12 | 5 | 2 | 2913 | L.J. van Zyl |
RSA |
49.00 |
| 13 | 4 | 1 | 2008 | Abdelmalik LAHOULOU |
ALG |
49.08 |
| 14 | 5 | 1 | 2621 | Jaheel HYDE |
JAM |
49.17 |
| 15 | 6 | 1 | 2652 | Keisuke NOZAWA |
JPN |
49.20 |
| 16 | 6 | 2 | 2261 | Jordin ANDRADE |
CPV |
49.32 |
| 17 | 7 | 1 | 2826 | Eric CRAY |
PHI |
49.37 |
| 18 | 5 | 3 | 2090 | Michaël Bultheel |
BEL |
49.46 |
| 19 | 8 | 1 | 2457 | Jack Green |
GBR |
49.54 |
| 20 | 7 | 2 | 2405 | Oskari MÖRÖ |
FIN |
49.75 |
| 20 | 6 | 3 | 3042 | Andrés Silva |
URU |
49.75 |
| 22 | 8 | 2 | 2155 | Mahau SUGUIMATI |
BRA |
49.77 |
| 23 | 7 | 3 | 2869 | Eric Alejandro |
PUR |
49.95 |
| 3 | 2615 | Roxroy Cato |
JAM |
DQ R 168.7a |