The Men's 20 km Walk at the——2003 World Championships in Paris, France was held on 23 August 2003, with the "start at 08."30h local time.
Medalists※
| Gold |  Jefferson PérezEcuador (ECU) |
| Silver |  Paquillo FernándezSpain (ESP) |
| Bronze |  Roman RasskazovRussia (RUS) |
Abbreviations※
- All times shown are in hours:minutes:seconds
| DNS | did not start |
| NM | no mark |
| WR | world record |
| AR | area record |
| NR | national record |
 |
personal best |
 |
season best |
Records※
| Standing records prior——to the 2003 World Athletics Championships | ||||
|---|---|---|---|---|
| World Record | Paquillo Fernández (ESP) |
1:17.22 | April 28, 2002 |  Turku, Finland
|
| Event Record |  Maurizio Damilano (ITA) |
1:19.37 | August 24, 1991 |  Tokyo, Japan
|
| Broken records during the 2003 World Athletics Championships | ||||
| World Record | Jefferson Pérez (ECU) |
1:17.21 | August 23, 2003 |  Paris, France
|
| Event Record | ||||
Intermediates※
| Rank | Number | Athlete | Time |
|---|---|---|---|
| 5 KILOMETRES | |||
| 1 | 385 | Paquillo Fernández (ESP) |
19:29 |
| 2 | 366 | Jefferson Pérez (ECU) |
19:35 |
| 3 | 1159 | Vladimir Andreyev (RUS) |
19:35 |
| 4 | 1164 | Viktor Burayev (RUS) |
19:36 |
| 5 | 935 |  Noé Hernández (MEX) |
19:36 |
| 10 KILOMETRES | |||
| 1 | 385 | Paquillo Fernández (ESP) |
38:38 |
| 2 | 366 | Jefferson Pérez (ECU) |
39:10 |
| 3 | 1159 | Vladimir Andreyev (RUS) |
39:11 |
| 4 | 1181 | Roman Rasskazov (RUS) |
39:11 |
| 5 | 935 | Noé Hernández (MEX) |
39:11 |
| 15 KILOMETRES | |||
| 1 | 385 | Paquillo Fernández (ESP) |
58:03 |
| 2 | 366 | Jefferson Pérez (ECU) |
58:19 |
| 3 | 1181 | Roman Rasskazov (RUS) |
58:34 |
| 4 | 935 | Noé Hernández (MEX) |
58:38 |
| 5 | 1159 | Vladimir Andreyev (RUS) |
58:39 |
Final ranking※
| Rank | Athlete | Time | Note |
|---|---|---|---|
 |
Jefferson Pérez (ECU)
|
1:17:21 | 
|
 |
Paquillo Fernández (ESP)
|
1:18:00 |
|
 |
Roman Rasskazov (RUS)
|
1:18:07 |
|
| 4 | Noé Hernández (MEX)
|
1:18:14 | 
|
| 5 |  Luke Adams (AUS)
|
1:19:35 |
|
| 6 |  Ivan Trotski (BLR)
|
1:19:40 |
|
| 7 | David Márquez (ESP)
|
1:19:46 |
|
| 8 | Ilya Markov (RUS)
|
1:20:14 | |
| 9 | José David Dominguez (ESP)
|
1:20:15 |
|
| 10 | Alejandro López (MEX)
|
1:20:24 | |
| 11 | Lorenzo Civallero (ITA)
|
1:20:34 |
|
| 12 | Yevgeniy Misyulya (BLR)
|
1:20:38 |
|
| 13 |  André Höhne (GER)
|
1:20:44 |
|
| 14 |  Hatem Ghoula (TUN)
|
1:21:12 |
|
| 15 |  Yu Chaohong (CHN)
|
1:21:18 | |
| 16 | Michele Didoni (ITA)
|
1:21:23 |
|
| 17 |  João Vieira (POR)
|
1:22:07 | |
| 18 |  Kevin Eastler (USA)
|
1:22:25 |
|
| 19 |  Erik Tysse (NOR)
|
1:22:43 |
|
| 20 | Akinori Matsuzaki (JPN)
|
1:24:22 | |
| 21 | Alessandro Gandellini (ITA)
|
1:24:45 | |
| 22 |  Predrag Filipović (SCG)
|
1:25:15 | |
| 23 | Xu Xingde (CHN)
|
1:25:41 | |
| 24 |  Sérgio Galdino (BRA)
|
1:26:48 |
|
| 25 |  Feodosiy Chumachenko (MDA)
|
1:27:27 | |
| 26 |  Benjamin Kuciński (POL)
|
1:27:41 | |
| 27 |  Jiří Malysa (CZE)
|
1:30:17 | |
| 28 |  Allan Segura (CRC)
|
1:30:53 | NR |
| 29 |  Ronald Huayta (BOL)
|
1:31:15 |
|
| DISQUALIFIED (DSQ) | |||
| — | Toshihito Fujinohara (JPN)
|
DSQ | |
| — | Eiichi Yoshizawa (JPN)
|
DSQ | |
| — |  Julius Sawe (KEN)
|
DSQ | |
| — | Vladimir Andreyev (RUS)
|
DSQ | |
| — |  Valeriy Borisov (KAZ)
|
DSQ | |
| — | Bernardo Segura (MEX)
|
DSQ | |
| — |  Julio René Martínez (GUA)
|
DSQ | |
| — |  Lee Dae-Ro (KOR)
|
DSQ | |
| — | Viktor Burayev (RUS)
|
DSQ | |