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 | 1119 |
| 2 | France | 410 |
| 3 | Italy | 332 |
| 4 | Spain | 216 |
| 5 | Netherlands | 207 |
| 6 | Germany | 95 |
| 7 | Switzerland | 92 |
| 8 | United States | 56 |
| 9 | Australia | 46 |
| 10 | Denmark | 45 |
| 11 | Russia | 40 |
| 12 | Great Britain | 38 |
| 13 | Luxembourg | 31 |
| 14 | Colombia | 28 |
| 15 | Poland | 22 |
| 16 | Austria | 20 |
| 17 | Portugal | 16 |
| 18 | Norway | 16 |
| 19 | Sweden | 15 |
| 20 | Slovenia | 15 |
| 21 | Ukraine | 14 |
| 22 | Kazakhstan | 14 |
| 23 | South Africa | 12 |
| 24 | Ireland | 12 |
| 25 | Czech Republic | 10 |
| 26 | Canada | 10 |
| 27 | Lithuania | 8 |
| 28 | Latvia | 6 |
| 29 | Estonia | 6 |
| 30 | New Zealand | 5 |
| 31 | Japan | 4 |
| 32 | Finland | 4 |
| 33 | Belarus | 4 |
| 34 | Eritrea | 4 |
| 35 | Moldova | 3 |
| 36 | Slovakia | 3 |
| 37 | Croatia | 2 |
| 38 | China | 2 |
| 39 | Yugoslavia | 2 |
| 40 | Mexico | 2 |
| 41 | Costa Rica | 1 |
| 42 | Algeria | 1 |
| 43 | Ethiopia | 1 |
| 44 | Brazil | 1 |
| 45 | Venezuela | 1 |