Overview of the number of competitors per nation. Note that for races with a long history this statistic will be incomplete as historical starting lists are not always complete.
| Pos. | Nation | #Different riders |
|---|---|---|
| 1 | Belgium | 528 |
| 2 | Netherlands | 480 |
| 3 | Italy | 252 |
| 4 | France | 237 |
| 5 | Spain | 152 |
| 6 | Germany | 140 |
| 7 | Australia | 64 |
| 8 | Switzerland | 63 |
| 9 | Denmark | 55 |
| 10 | United States | 47 |
| 11 | Russia | 36 |
| 12 | Great Britain | 35 |
| 13 | Kazakhstan | 22 |
| 14 | Luxembourg | 21 |
| 15 | Slovenia | 21 |
| 16 | Norway | 19 |
| 17 | New Zealand | 16 |
| 18 | Sweden | 15 |
| 19 | Poland | 15 |
| 20 | Ukraine | 14 |
| 21 | Austria | 13 |
| 22 | Colombia | 12 |
| 23 | Portugal | 11 |
| 24 | South Africa | 11 |
| 25 | Estonia | 10 |
| 26 | Latvia | 10 |
| 27 | Lithuania | 10 |
| 28 | Czech Republic | 9 |
| 29 | Canada | 9 |
| 30 | Belarus | 8 |
| 31 | Ireland | 8 |
| 32 | Slovakia | 6 |
| 33 | Japan | 5 |
| 34 | Argentina | 4 |
| 35 | Mexico | 2 |
| 36 | China | 2 |
| 37 | Uzbekistan | 2 |
| 38 | Moldova | 2 |
| 39 | Israel | 2 |
| 40 | Brazil | 2 |
| 41 | Chile | 1 |
| 42 | United Arab Emirates | 1 |
| 43 | Hungary | 1 |
| 44 | Bulgaria | 1 |
| 45 | Greece | 1 |
| 46 | Venezuela | 1 |
| 47 | Finland | 1 |
| 48 | Costa Rica | 1 |
| 49 | Guatemala | 1 |
| 50 | Algeria | 1 |