All available race results Marc Demeyer
| Date | Race | Rank |
| Wyścig Pokoju / Závod Míru / Friedensfahrt | ||
| 10/05 | Stage 5 | 1 |
| 12/05 | Stage 6 | 6 |
| 15/05 | Stage 9 | 1 |
| 16/05 | Stage 10 | 9 |
| 18/05 | Stage 11 | 4 |
| 20/05 | Stage 13 | 3 |
| 21/05 | Stage 14 | 2 |
| 21/05 | General Classification | 4 |
| 05/09 | World Championships Road Race (Amateurs) | 50 |
Rider information for 1971
| Rank | 309 |
| Score | 100 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Flandria - Mars |
| Date | Race | Rank |
| 04/03 | Omloop Het Volk | 54 |
| 05/03 | Kuurne - Brussel - Kuurne | 22 |
| Paris - Nice | ||
| 16/03 | General Classification | 82 |
| 13/04 | G.P. Pino Cerami | 40 |
| 18/04 | Nokere Koerse | 12 |
| Tour de Luxembourg | ||
| 08/06 | Prologue | 2 |
| G.P. de Fourmies | ||
| 30/07 | Stage 2 | 12 |
| 30/07 | General Classification | 33 |
| 01/08 | Scheldeprijs - Schoten | 20 |
| 26/08 | Dwars door België | 1 |
| 27/08 | G.P. Fayt-le-Franc | 1 |
| Tour de la Nouvelle France | ||
| 23/09 | Stage 4a | 3 |
| 24/09 | General Classification | 50 |
Rider information for 1972
| Rank | 196 |
| Score | 237 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Beaulieu - Flandria |
Rider information for 1973
| Rank | 105 |
| Score | 435 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Flandria - Carpenter - Shimano |
Rider information for 1974
| Rank | 22 |
| Score | 1492 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Carpenter - Confortluxe - Flandria |
Rider information for 1975
| Rank | 28 |
| Score | 1177 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Carpenter - Confortluxe - Flandria |
Rider information for 1976
| Rank | 34 |
| Score | 1206 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Flandria - Velda - West Vlaams Vleesbedrijf |
Rider information for 1977
| Rank | 33 |
| Score | 1080 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Flandria - Velda - Latina Assicurazioni |
| Date | Race | Rank |
| 04/03 | Omloop Het Volk | 9 |
| 05/03 | Kuurne - Brussel - Kuurne | 14 |
| 08/03 | G.P. Fayt-le-Franc | 3 |
| 18/03 | Milano - Sanremo | 131 |
| 01/04 | G.P. E3 - Harelbeke | 6 |
| 02/04 | Dwars door België | 19 |
| 06/04 | G.P. Pino Cerami | 12 |
| 12/04 | Gent - Wevelgem | 11 |
| 16/04 | Paris - Roubaix | 10 |
| 20/04 | La Flèche Wallonne | 38 |
| 23/04 | Liège - Bastogne - Liège | 36 |
| 08/05 | G.P. de Wallonie | 27 |
| Dauphiné Libéré | ||
| 05/06 | General Classification | 57 |
| Tour de Suisse | ||
| 15/06 | Stage 1 | 4 |
| 20/06 | Stage 6 | 3 |
| 23/06 | Stage 9a | 6 |
| 23/06 | General Classification | 36 |
| Tour de France | ||
| 29/06 | Prologue | 33 |
| 30/06 | Stage 1a | 58 |
| 30/06 | Stage 1b | 45 |
| 01/07 | Stage 2 | 12 |
| 02/07 | Stage 3 | 68 |
| 04/07 | Stage 5 | 38 |
| 05/07 | Stage 6 | 28 |
| 06/07 | Stage 7 | 34 |
| 07/07 | Stage 8 | 31 |
| 08/07 | Stage 9 | 3 |
| 10/07 | Stage 10 | 75 |
| 11/07 | Stage 11 | 76 |
| 12/07 | Stage 12b | 53 |
| 13/07 | Stage 13 | 57 |
| 14/07 | Stage 14 | 60 |
| 15/07 | Stage 15 | 73 |
| 16/07 | Stage 16 | 66 |
| 18/07 | Stage 17 | 41 |
| 19/07 | Stage 18 | 34 |
| 20/07 | Stage 19 | 1 |
| 21/07 | Stage 20 | 6 |
| 22/07 | Stage 21 | 7 |
| 23/07 | Stage 22 | 36 |
| General Classification | 49 | |
| 03/09 | Paris - Bruxelles | 20 |
Rider information for 1978
| Rank | 53 |
| Score | 788 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Flandria - Velda - Lano |
Rider information for 1979
| Rank | 16 |
| Score | 1759 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Flandria - Ca-va seul |
| Date | Race | Rank |
| 02/03 | Omloop Het Volk | 9 |
| Paris - Nice | ||
| 12/03 | General Classification | 36 |
| 22/03 | G.P. E3 - Harelbeke | 9 |
| 23/03 | Dwars door België | 11 |
| Driedaagse De Panne | ||
| 27/03 | General Classification | 21 |
| 30/03 | Ronde van Vlaanderen | 5 |
| 13/04 | Paris - Roubaix | 5 |
| 4 Jours de Dunkerque | ||
| 07/05 | Stage 1 | 2 |
| 09/05 | Stage 3 | 6 |
| 10/05 | Stage 4a | 5 |
| 11/05 | Stage 5a | 2 |
| 11/05 | General Classification | 8 |
| Dauphiné Libéré | ||
| 29/05 | Stage 3a | 2 |
| G.P. du Midi-Libre | ||
| 13/06 | Stage 2 | 3 |
| 14/06 | Stage 3 | 1 |
| 15/06 | Stage 4 | 3 |
| 15/06 | General Classification | 33 |
| Ronde van Nederland | ||
| 12/08 | Stage 2 | 3 |
| 14/08 | Stage 4 | 4 |
| 21/09 | G.P. Jef Scherens - Leuven | 6 |
| 24/09 | Paris - Bruxelles | 2 |
Rider information for 1980
| Rank | 55 |
| Score | 851 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | IJsboerke - Warncke Eis |
| Date | Race | Rank |
| Paris - Nice | ||
| 18/03 | General Classification | 41 |
| 21/03 | Milano - Sanremo | 64 |
| 28/03 | G.P. E3 - Harelbeke | 10 |
| Driedaagse De Panne | ||
| 01/04 | General Classification | 56 |
| 05/04 | Ronde van Vlaanderen | 34 |
| 08/04 | Gent - Wevelgem | 5 |
| 12/04 | Paris - Roubaix | 5 |
| 17/04 | La Flèche Wallonne | 70 |
Rider information for 1981
| Rank | 163 |
| Score | 354 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Capri Sonne |
No results available in season 1982.
Rider information for 1982
| Rank | 1157 |
| Score | 0 |
| Name | Marc DEMEYER |
| Country | Belgium |
| Team | Splendor - Wickes Bouwmarkt |