| Grimpeurs | Nationalité | Nb de voies |
| Adam Mach | 5 | |
| Ekaitz Maiz | 5 | |
| Pau March | 1 | |
| 25 | ||
| Mina Markovic | 1 | |
| Lucas Marques | 1 | |
| Diego Marsella | 2 | |
| Buster Martin | 2 | |
| 6 | ||
| Luca Marzari | 1 | |
| Christophe Maschelein | 1 | |
| 3 | ||
| Iris Matamoros Quero | 4 | |
| Hamish Mc Arthur | 1 | |
| 11 | ||
| 3 | ||
| James Mc Haffie | 2 | |
| 4 | ||
| Elias Jonas Mc Rae | 2 | |
| 80 | ||
| Hugo Meignan | 2 | |
| Matteo Menardi | 10 | |
| Tanguy Mérard | 1 | |
| Rocco Micheletto | 1 | |
| 20 | ||
| Nicholas Milburn | 1 | |
| 1 | ||
| Dan Mirsky | 1 | |
| 1 | ||
| Daniel Moreno | 4 | |
| Riccardo Moretti | 1 | |
| 23 | ||
| Rafel Moucka | 1 | |
| 10 | ||
| Ignacio Mulero | 3 | |
| Josh Muller | 1 | |
| Marco Müller | 1 | |
| Christian Münch | 1 | |
| Jesus Munoz Vaquero | 1 |