All available race results Custodio Mazuela Castillo
| Date | Race | Rank |
| Setmana Catalana | ||
| 26/03 | General Classification | 34 |
| 11/04 | Klasika Primavera de Amorebieta | 21 |
| Vuelta a España | ||
| 27/04 | Prologue | 56 |
| 28/04 | Stage 1 | 64 |
| 29/04 | Stage 2 | 31 |
| 30/04 | Stage 3 | 23 |
| 21/06 | Campeonato de España en carretera | 21 |
| Volta Ciclista a Catalunya | ||
| 15/09 | General Classification | 22 |
Rider information for 1976
| Rank | 366 |
| Score | 71 |
| Name | Custodio MAZUELA CASTILLO |
| Country | Spain |
| Team | Novostil - Transmallorca |
| Date | Race | Rank |
| 27/02 | Gran Premio de Valencia | 4 |
| Setmana Catalana | ||
| 25/03 | General Classification | 15 |
| Vuelta al Pais Vasco | ||
| 01/04 | Stage 5a | 1 |
| General Classification | 8 | |
| Vuelta a España | ||
| 26/04 | Prologue | 42 |
| 27/04 | Stage 1 | 28 |
| 28/04 | Stage 2 | 28 |
| 29/04 | Stage 3 | 13 |
| 30/04 | Stage 4 | 32 |
| 01/05 | Stage 5 | 63 |
| 03/05 | Stage 7 | 40 |
| 04/05 | Stage 8 | 45 |
| 05/05 | Stage 9 | 41 |
| 06/05 | Stage 10 | 20 |
| 07/05 | Stage 11a | 33 |
| 07/05 | Stage 11b | 62 |
| 08/05 | Stage 12 | 26 |
| 09/05 | Stage 13 | 37 |
| 10/05 | Stage 14 | 29 |
| 11/05 | Stage 15 | 37 |
| 12/05 | Stage 16 | 41 |
| 13/05 | Stage 17 | 35 |
| 14/05 | Stage 18 | 37 |
| 15/05 | Stage 19 | 38 |
| General Classification | 31 | |
| 26/06 | Campeonato de España en carretera | 17 |
| Volta Ciclista a Catalunya | ||
| 10/09 | Stage 3b | 7 |
| 14/09 | General Classification | 17 |
| Vuelta a Andalucia - Ruta del Sol | ||
| General Classification | 18 |
Rider information for 1977
| Rank | 153 |
| Score | 303 |
| Name | Custodio MAZUELA CASTILLO |
| Country | Spain |
| Team | Novostil - Transmallorca - Gios |
| Date | Race | Rank |
| Setmana Catalana | ||
| 28/03 | Stage 2 | 10 |
| 31/03 | General Classification | 21 |
| Vuelta a España | ||
| 25/04 | Prologue | 78 |
| 26/04 | Stage 1 | 49 |
| 27/04 | Stage 2 | 18 |
| 28/04 | Stage 3 | 51 |
| 29/04 | Stage 4 | 69 |
| 30/04 | Stage 5 | 72 |
| 01/05 | Stage 6 | 47 |
| 02/05 | Stage 7 | 47 |
| 03/05 | Stage 8 | 20 |
| 04/05 | Stage 9 | 36 |
| 05/05 | Stage 10 | 21 |
| 06/05 | Stage 11a | 15 |
| 06/05 | Stage 11b | 37 |
| 07/05 | Stage 12 | 33 |
| 08/05 | Stage 13 | 11 |
| 09/05 | Stage 14 | 23 |
| 10/05 | Stage 15 | 28 |
| 11/05 | Stage 16 | 18 |
| 12/05 | Stage 17 | 26 |
| 13/05 | Stage 18 | 32 |
| 14/05 | Stage 19a | 44 |
| General Classification | 29 | |
| 25/06 | Campeonato de España en carretera | 15 |
| Volta Ciclista a Catalunya | ||
| 14/09 | General Classification | 29 |
Rider information for 1978
| Rank | 290 |
| Score | 111 |
| Name | Custodio MAZUELA CASTILLO |
| Country | Spain |
| Team | Novostil - Helios |
| Date | Race | Rank |
| Setmana Catalana | ||
| 30/03 | General Classification | 22 |
| Vuelta a España | ||
| 24/04 | Prologue | 67 |
| 25/04 | Stage 1 | 49 |
| 26/04 | Stage 2 | 36 |
| 27/04 | Stage 3 | 35 |
| 28/04 | Stage 4 | 25 |
| 29/04 | Stage 5 | 15 |
| 01/05 | Stage 7 | 38 |
| 02/05 | Stage 8a | 50 |
| 02/05 | Stage 8b | 61 |
| 03/05 | Stage 9 | 61 |
| 04/05 | Stage 10 | 36 |
| 05/05 | Stage 11 | 20 |
| 06/05 | Stage 12 | 19 |
| 07/05 | Stage 13 | 62 |
| 08/05 | Stage 14 | 79 |
| 09/05 | Stage 15 | 78 |
| 10/05 | Stage 16a | 9 |
| 10/05 | Stage 16b | 71 |
| 11/05 | Stage 17 | 14 |
| 24/06 | Campeonato de España en carretera | 13 |
Rider information for 1979
| Rank | 504 |
| Score | 23 |
| Name | Custodio MAZUELA CASTILLO |
| Country | Spain |
| Team | Novostil - Helios |