Marathoners by nation
| Ecuador | M | Miguel Angel | Almachi | Rio 2016 | 2:23:00 | 85 | |
| Ecuador | M | Miguel Angel | Almachi | London 2012 | 2:19:53 | 50 | |
| Ecuador | M | Silvio | Guerra | Sydney 2000 | 2:16:27 | 14 | |
| Ecuador | M | Silvio | Guerra | Athens 2004 | 2:25:29 | 61 | |
| Ecuador | M | Gustavo | Gutiérrez | Mexico City 1968 | 3:03:07 | 53 | |
| Ecuador | M | Segundo | Jami | Rio 2016 | 2:31:07 | 124 | |
| Ecuador | M | Bayron | Piedra | Rio 2016 | 2:14:12 | 18 | |
| Ecuador | M | Franklin | Tenorio | Beijing 2008 | 2:29:05 | 65 | |
| Ecuador | M | Franklin | Tenorio | Athens 2004 | 2:31:12 | 71 | |
| Ecuador | M | Rolando | Vera | Atlanta 1996 | 2:17:40 | 22 | |
| Ecuador | M | Rolando | Vera | Barcelona 1992 | 2:21:30 | 43 | |
| Ecuador | M | B. | Villacis | Paris 1924 | DNF | ||
| Number of unique men participants: 8 | |||||||
| Ecuador | F | Andrea Paola | Bonilla | Tokyo 2020 | 2:43:30 | 60 | |
| Ecuador | F | Maria Elena | Calle | Rio 2016 | 2:48:39 | 99 | |
| Ecuador | F | Rosa | Chacha | Tokyo 2020 | 2:36:44 | 41 | |
| Ecuador | F | Rosa | Chacha | Rio 2016 | 2:48:52 | 100 | |
| Ecuador | F | Rosa Alva | Chacha | Paris 2024 | 2:42:14 | 73 | |
| Ecuador | F | Rosa | Chacha | London 2012 | 2:40:57 | 83 | |
| Ecuador | F | Mary Zenaida | Granja | Paris 2024 | 2:34:34 | 53 | |
| Ecuador | F | Silvia Patricia | Ortiz Morocho | Paris 2024 | 2:37:23 | 61 | |
| Ecuador | F | Silvia | Paredes | Rio 2016 | 2:48:01 | 95 | |
| Ecuador | F | Sandra | Ruales | Beijing 2008 | 2:35:53 | 43 | |
| Ecuador | F | Sandra | Ruales | Athens 2004 | 2:44:28 | 36 | |
| Ecuador | F | Martha | Tenorio | Sydney 2000 | 2:33:54 | 25 | |
| Ecuador | F | Martha | Tenorio | Atlanta 1996 | DNF | ||
| Number of unique women participants: 9 | |||||||
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