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 | Spain | 163 |
| 2 | Italy | 112 |
| 3 | Netherlands | 80 |
| 4 | France | 48 |
| 5 | Germany | 44 |
| 6 | Australia | 41 |
| 7 | Great Britain | 35 |
| 8 | Belgium | 32 |
| 9 | Russia | 22 |
| 10 | Sweden | 21 |
| 11 | United States | 17 |
| 12 | Portugal | 15 |
| 13 | Lithuania | 13 |
| 14 | Poland | 12 |
| 15 | Switzerland | 12 |
| 16 | New Zealand | 9 |
| 17 | China | 9 |
| 18 | Austria | 8 |
| 19 | Colombia | 8 |
| 20 | Ukraine | 7 |
| 21 | Slovenia | 7 |
| 22 | South Africa | 7 |
| 23 | Norway | 6 |
| 24 | Denmark | 6 |
| 25 | Brazil | 5 |
| 26 | Israel | 4 |
| 27 | Czech Republic | 4 |
| 28 | Japan | 4 |
| 29 | Canada | 4 |
| 30 | Kazakhstan | 3 |
| 31 | Belarus | 3 |
| 32 | Romania | 2 |
| 33 | Venezuela | 2 |
| 34 | Andorra | 2 |
| 35 | Hungary | 2 |
| 36 | Luxembourg | 2 |
| 37 | Latvia | 1 |
| 38 | Finland | 1 |
| 39 | Uzbekistan | 1 |
| 40 | Cyprus | 1 |
| 41 | Hongkong | 1 |
| 42 | Estonia | 1 |
| 43 | Chile | 1 |
| 44 | Mauritius | 1 |
| 45 | Serbia | 1 |
| 46 | Azerbaijan | 1 |
| 47 | Mexico | 1 |
| 48 | Slovakia | 1 |
| 49 | Argentina | 1 |
| 50 | Ireland | 1 |
| 51 | Ethiopia | 1 |
| 52 | Uruguay | 1 |
| 53 | South Korea | 1 |
| 54 | Greece | 1 |
| 55 | Trinidad & Tobago | 1 |