| Dionicio Cerón | |
| Fullname: | Dionicio Cerón Pizarro |
| Nationality: |  |
| Sport: | Running |
| Event: | 10,000 metres marathon |
| Birth Date: | 9 October 1965 |
| Birth Place: | Toluca |
| Height: | 1.71m (05.61feet) |
| Weight: | 54kg (119lb) |
Dionicio Cerón Pizarro (born October 9, 1965 in Toluca) is a former marathon runner from Mexico, whose personal best in the classic distance was 2:08:30. He represented his native country two times at the Summer Olympics: in 1992 and 1996. He also won the London Marathon three consecutive times between 1994 and 1996, the only man to have ever achieved this feat. Eliud Kipchoge, António Pinto and Martin Lel are the only other men to have won it three times or more, however not in consecutive years.
| Representing | ||||||
|---|---|---|---|---|---|---|
| 1990 | Chicago Marathon | Chicago, United States | 9th | Marathon | 2:12:18 | |
| Mexico City, Mexico | bgcolor=gold | 1st | 10,000 m | 29:46.09 | ||
| 1991 | Rotterdam Marathon | Rotterdam, Netherlands | 2nd | Marathon | 2:10:02 | |
| 1992 | Barcelona, Spain | - | Marathon | |||
| Beppu-Ōita Marathon | Beppu-Ōita, Japan | 1st | Marathon | 2:08:36 | ||
| Fukuoka Marathon | Fukuoka, Japan | 4th | Marathon | 2:10:42 | ||
| 1993 | Rotterdam Marathon | Rotterdam, Netherlands | 1st | Marathon | 2:11:06 | |
| Ponce, Puerto Rico | 1st | 10,000 m | 28:58.11 | |||
| Fukuoka, Japan | 1st | Marathon | 2:08:51 | |||
| 1994 | London, United Kingdom | 1st | Marathon | 2:08:53 | ||
| Fukuoka Marathon | Fukuoka, Japan | 16th | Marathon | 2:15:23 | ||
| 1995 | London, United Kingdom | 1st | Marathon | 2:08:30 | ||
| Gothenburg, Sweden | 2nd | Marathon | 2:12:13 | |||
| 1996 | London, United Kingdom | 1st | Marathon | 2:10:00 | ||
| 1997 | Boston Marathon | Boston, United States | 3rd | Marathon | 2:10:59 | |
| New York City Marathon | New York City, United States | 8th | Marathon | 2:13:01 | ||
| 2000 | Hokkaido Marathon | Sapporo, Japan | 1st | Marathon | 2:17:14 | |