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 | Netherlands | 448 |
| 2 | Belgium | 153 |
| 3 | Germany | 133 |
| 4 | Norway | 42 |
| 5 | Great Britain | 30 |
| 6 | Denmark | 26 |
| 7 | United States | 20 |
| 8 | Russia | 19 |
| 9 | Luxembourg | 17 |
| 10 | Australia | 13 |
| 11 | New Zealand | 13 |
| 12 | Japan | 12 |
| 13 | Italy | 11 |
| 14 | Switzerland | 10 |
| 15 | France | 10 |
| 16 | Lithuania | 9 |
| 17 | Sweden | 8 |
| 18 | Ireland | 8 |
| 19 | Czech Republic | 7 |
| 20 | Philippines | 6 |
| 21 | Canada | 5 |
| 22 | Latvia | 5 |
| 23 | Spain | 4 |
| 24 | South Africa | 4 |
| 25 | Poland | 4 |
| 26 | Austria | 3 |
| 27 | Portugal | 3 |
| 28 | Estonia | 3 |
| 29 | Finland | 2 |
| 30 | Hungary | 2 |
| 31 | China | 2 |
| 32 | Malaysia | 1 |
| 33 | Curacao | 1 |
| 34 | Taiwan | 1 |
| 35 | Greece | 1 |
| 36 | Dominican Republic | 1 |
| 37 | Albania | 1 |
| 38 | Namibia | 1 |
| 39 | Argentina | 1 |
| 40 | Kazakhstan | 1 |
| 41 | Belarus | 1 |
| 42 | Mexico | 1 |
| 43 | Eritrea | 1 |
| 44 | Colombia | 1 |
| 45 | Slovenia | 1 |