Athletics at the 2003 Pan American Games
Track events
100 m	men	women
200 m	men	women
400 m	men	women
800 m	men	women
1500 m	men	women
5000 m	men	women
10,000 m	men	women
100 m hurdles		women
110 m hurdles	men
400 m hurdles	men	women
3000 m steeplechase	men
4×100 m relay	men	women
4×400 m relay	men	women
Road events
Marathon	men	women
20 km walk	men	women
50 km walk	men
Field events
High jump	men	women
Pole vault	men	women
Long jump	men	women
Triple jump	men	women
Shot put	men	women
Discus throw	men	women
Hammer throw	men	women
Javelin throw	men	women
Combined events
Heptathlon		women
Decathlon	men
v t e

The Men's 20 km Race Walking event at the 2003 Pan American Games took place on Tuesday August 5, 2003. Ecuador's Jefferson Pérez regained the title he lost four years earlier to Bernardo Segura. The title defender from Mexico ended up in second place this time.

Gold	Jefferson Pérez  Ecuador
Silver	Bernardo Segura  Mexico
Bronze	Alejandro López  Mexico

World Record	Paquillo Fernández (ESP)	1:17:22	April 28, 2002	Turku, Finland
Pan Am Record	Bernardo Segura (MEX)	1:20:17	July 26, 1999	Winnipeg, Canada

Rank	Athlete	Time
1	Jefferson Pérez (ECU)	1:23:06
2	Bernardo Segura (MEX)	1:23:31
3	Alejandro López (MEX)	1:24:33
4	Luis Fernando López (COL)	1:27:32
5	Fredy Hernández (COL)	1:28:07
6	Cristian Muñoz (CHI)	1:31:07
7	Timothy Seaman (USA)	1:33:24
8	John Nunn (USA)	1:35:34
9	Edwin Centeno (PER)	1:39:16
10	José Ramón Henríquez (DOM)	1:42:50
11	Fraulin Caminero (DOM)	1:49:41
—	Luis Fernando García (GUA)	DNF
—	Fausto Quinde (ECU)	DNF
—	Julio René Martínez (GUA)	DSQ
—	José Alessandro Bagio (BRA)	DSQ

• 2003 Race Walking Year Ranking
• 2003 World Championships in Athletics – Men's 20 kilometres walk
• Athletics at the 2004 Summer Olympics – Men's 20 kilometre walk

• Results