| Climb Name | Type | Grade | # Ascents Recorded | Notes | Exclude Reason |
|---|---|---|---|---|---|
| Melpomene | Trad climb | E4 | 1 | ||
| Meltdown | Trad climb | E7 | 1 | ||
| Memento | Sport route | 8b+ | 1 | ||
| Memorias de una Sepia | Sport route | 8a | 1 | ||
| Menhir | Boulder problem | 8B | 1 |
Opened at 8B/+ around 2002 and still considered tough for 8B, this would have been one of the very hardest problems in the forest at the time. |
|
| Merchant of Menace | Sport route | 8b | 1 | ||
| Merchants of Death | Trad climb | HVS | 1 | ||
| Merlin | Trad climb | E6 | 1 | ||
| Mescalito | Sport route | 7c | 1 | ||
| Metropolis | Boulder problem | 8C | 1 |
Ireland's first 8C. |
|
| Mezzogiorno di Fuoco | Sport route | 8b | 1 | ||
| Mia Julia | Deep water solo | 8a | 1 | ||
| Michael Knight Wears a Chest Wig | Trad climb | E7 | 1 | ||
| Michel-Ange | Boulder problem | 7C | 1 | ||
| Microcosm | Sport route | 8a+ | 1 | ||
| Middle Traverse | Boulder problem | 7A | 1 | ||
| Midnight Summer Dream | Trad climb | E5 | 1 | ||
| Milky Way | Trad climb | E6 | 1 | ||
| Mille Millions de Mille Sabords | Sport route | 8b | 1 | ||
| Millennium | Sport route | 8b | 1 |