All available race results Guillermo Arenas Reyes
| Date | Race | Rank |
| 03/09 | World Championships Road Race (Amateurs) | 52 |
Rider information for 1983
| Rank | 675 |
| Score | 13 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Individual |
| Date | Race | Rank |
| Vuelta a Andalucia - Ruta del Sol | ||
| 07/02 | General Classification | 11 |
| 08/02 | Stage 1 | 1 |
| Critérium International | ||
| 27/03 | General Classification | 62 |
| 08/04 | Klasika Primavera de Amorebieta | 12 |
| 24/06 | Campeonato de España en carretera | 10 |
| 16/08 | Clasica San Sebastian | 40 |
| Vuelta al Pais Vasco | ||
| General Classification | 48 |
Rider information for 1984
| Rank | 440 |
| Score | 66 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Reynolds |
| Date | Race | Rank |
| Vuelta a España | ||
| 25/04 | Stage 2 | 29 |
| 26/04 | Stage 3 | 127 |
| 29/04 | Stage 6 | 37 |
| 30/04 | Stage 7 | 123 |
| 03/05 | Stage 10 | 81 |
| 04/05 | Stage 11 | 56 |
| 05/05 | Stage 12 | 72 |
| 07/05 | Stage 14 | 29 |
| 08/05 | Stage 15 | 56 |
| 09/05 | Stage 16 | 28 |
| 10/05 | Stage 17 | 36 |
| 11/05 | Stage 18 | 97 |
| 12/05 | Stage 19 | 53 |
| General Classification | 61 | |
| Volta Ciclista a Catalunya | ||
| 11/09 | General Classification | 55 |
| Vuelta al Pais Vasco | ||
| General Classification | 14 |
Rider information for 1985
| Rank | 364 |
| Score | 100 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Reynolds - TS Batteries |
| Date | Race | Rank |
| Paris - Nice | ||
| 05/03 | Stage 3 | 27 |
| 07/03 | Stage 5 | 24 |
| 09/03 | Stage 7b | 20 |
| 09/03 | General Classification | 22 |
| Critérium International | ||
| 23/03 | General Classification | 33 |
| 06/04 | Klasika Primavera de Amorebieta | 23 |
| Tour de Romandie | ||
| 09/05 | Stage 4 | 15 |
| 10/05 | Stage 5a | 10 |
| 21/06 | Campeonato de España en carretera | 60 |
| Tour de France | ||
| 04/07 | Prologue | 155 |
| 05/07 | Stage 1 | 92 |
| 06/07 | Stage 3 | 117 |
| 07/07 | Stage 4 | 45 |
| 08/07 | Stage 5 | 124 |
| 09/07 | Stage 6 | 122 |
| 10/07 | Stage 7 | 83 |
| 11/07 | Stage 8 | 172 |
| 12/07 | Stage 9 | 58 |
| 13/07 | Stage 10 | 131 |
| 14/07 | Stage 11 | 153 |
| 15/07 | Stage 12 | 59 |
| Vuelta al Pais Vasco | ||
| General Classification | 31 |
Rider information for 1986
| Rank | 295 |
| Score | 183 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Teka |
| Date | Race | Rank |
| Kellogg's Tour of Britain | ||
| 16/08 | General Classification | 55 |
| Volta Ciclista a Catalunya | ||
| 17/09 | General Classification | 60 |
Rider information for 1987
| Rank | 721 |
| Score | 24 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | BH |
| Date | Race | Rank |
| Vuelta a Murcia | ||
| 06/03 | General Classification | 4 |
| 10/04 | Klasika Primavera de Amorebieta | 22 |
| 26/06 | Campeonato de España en carretera | 24 |
| 13/08 | Clasica San Sebastian | 70 |
Rider information for 1988
| Rank | 592 |
| Score | 50 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | BH |
| Date | Race | Rank |
| Vuelta a Murcia | ||
| 12/03 | General Classification | 17 |
| Setmana Catalana | ||
| 24/03 | General Classification | 46 |
| Vuelta a España | ||
| General Classification | 47 |
Rider information for 1989
| Rank | 410 |
| Score | 108 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Paternina |
| Date | Race | Rank |
| 18/02 | Trofeo Luis Puig | 91 |
| Kellogg's Tour of Britain | ||
| 05/08 | General Classification | 18 |
| 11/08 | Clasica San Sebastian | 121 |
| Volta Ciclista a Catalunya | ||
| 13/09 | General Classification | 68 |
| Vuelta a Andalucia - Ruta del Sol | ||
| General Classification | 36 |
Rider information for 1990
| Rank | 459 |
| Score | 77 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Clas - Cajastur |
| Date | Race | Rank |
| 30/06 | Campeonato de España en carretera | 99 |
Rider information for 1991
| Rank | 1377 |
| Score | 0 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Clas - Cajastur |
No results available in season 1992.
Rider information for 1992
| Rank | 1293 |
| Score | 0 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | CHCS - Ciemar - Paternina |
No results available in season 1994.
Rider information for 1994
| Rank | 1596 |
| Score | 0 |
| Name | Guillermo ARENAS REYES |
| Country | Spain |
| Team | Artiach - Nabisco |