Most grandtour starts by competitors
Number of starts in grand tours before the start of Ronde van Vlaanderen 1921.
| Pos. | Rider | Starts | Tour | Giro | Vuelta |
|---|---|---|---|---|---|
| 1 | MOTTIAT Louis | 5 | 5 | - | - |
| 2 | MASSELIS Jules | 5 | 5 | - | - |
| 3 | DEJONGHE Albert | 3 | 3 | - | - |
| 4 | JUSERET Charles | 2 | 2 | - | - |
| 5 | LAMPAERT Maurice | 1 | 1 | - | - |
| 6 | VAN AKEN Léon | 1 | 1 | - | - |
| 7 | HUDSYN Pierre | 1 | 1 | - | - |
| 8 | CLAERHOUT Arthur | 1 | 1 | - | - |
| 9 | SELLIER Félix | 1 | 1 | - | - |
| 10 | VERBRAECKEN Louis | 1 | 1 | - | - |
| 11 | DEPAUW Achiel | 1 | 1 | - | - |
| 12 | SCHRIJVERS Henri | 0 | - | - | - |
| 13 | DUPREE Hubert | 0 | - | - | - |
| 14 | DICK Edward | 0 | - | - | - |
| 15 | VERTRIEST Gentiel | 0 | - | - | - |
| 16 | DEPOORTER Julien | 0 | - | - | - |
| 17 | LOBEAU Henri | 0 | - | - | - |
| 18 | VAN DEN BOSCH Emile | 0 | - | - | - |
| 19 | BELVAUX Jean | 0 | - | - | - |
| 20 | SEYNAEVE Alfons | 0 | - | - | - |