| Pos. | Name | Birth | Nat. |
| 1 | Raphael Trinidad | 2001 | Philippines |
| 2 | Gessi Noah | 2001 | Italy |
| 3 | Theva Daran | 2000 | France |
| 4 | Riccardo De Tollis | 2000 | Italy |
| 5 | Kieran Owens | 2002 | Great Britain |
1 riders go to the next heat
2 runs
| Pos. | Name | Birth | Nat. |
| 1 | Maxime Giry | 1999 | France |
| 2 | Kai Ditsch | 2000 | Argentina |
| 3 | Ulf Ditsch | 2000 | Argentina |
| 4 | Theo Balsa | 2002 | France |
| 5 | Mikayo Mundy | 2003 | Australia |
| 6 | Alessandro Dagostino | 2005 | Italy |
6 riders go to the next heat
2 runs
| Pos. | Name | Birth | Nat. |
| 1 | Locky Fort | 2000 | Australia |
| 2 | Nicolas Karagozian | 2000 | Argentina |
| 3 | Gatti Leonardo | 2000 | Italy |
| 4 | Ziv Zavaro | 2001 | Israel |
| 5 | Jan Barton | 2002 | Czech Republic |
1 riders go to the next heat
2 runs
| Pos. | Name | Birth | Nat. |
| 1 | Bork Ower | 2001 | Norway |
| 2 | Theo Balsa | 2002 | France |
| 3 | Kai Ditsch | 2000 | Argentina |
| 4 | Guy Lapid | 2000 | Israel |
| 5 | Jasper Van Suchtelen van de Haare | 2000 | Netherlands |
1 riders go to the next heat
2 runs
| Pos. | Name | Birth | Nat. |
| 1 | Jonas Sørlie | 2001 | Norway |
| 2 | Miguel Menendez Vellanoweth | 2000 | Mexico |
| 3 | Patrick Hanes | 2001 | Czech Republic |
| 4 | Philipp Koch | 1999 | Germany |
| 5 | Max Milde | 2002 | Germany |
1 riders go to the next heat
2 runs
| Pos. | Name | Birth | Nat. |
| 1 | Quique Cornejo | 2000 | Spain |
| 2 | Pedro Caldas | 2000 | Brasil |
| 3 | Daniel Castro | 2002 | Brasil |
| 4 | Ben Zilberman | 2000 | Israel |
| 5 | Florian Weiherer | 2000 | Germany |
1 riders go to the next heat
2 runs
| Pos. | Name | Birth | Nat. |
| 1 | Nick Volokhov | 2001 | Russia |
| 2 | Pedro Cavalcanti Diniz | 2002 | Brasil |
| 3 | Max Delhaas | 2000 | Netherlands |
| 4 | Ulf Ditsch | 2000 | Argentina |
| 5 | Oliver Orban | 2001 | Hungary |
1 riders go to the next heat
2 runs