| Climb Name | Type | Grade | # Ascents Recorded | Notes | Exclude Reason |
|---|---|---|---|---|---|
| Miami Vice | Boulder problem | 8B | 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 | ||
| Millsom's Minion | Trad climb | E1 | 1 | ||
| Millwheel Wall | Trad climb | E1 | 1 | ||
| Mind Flayer | Boulder problem | 8C | 1 | ||
| Mind Games | Boulder problem | 8B+ | 1 | ||
| Mind Riot | Trad climb | E10 | 1 | ||
| Mineshaft | Trad climb | VD | 1 |
Most likely climbed centuries ago by lead miners. |
|
| Mingus | Sport route | 8a | 1 | ||
| Minihulk | Boulder problem | 8A | 1 | ||
| Minimal Techno | Sport route | 8a | 1 | ||
| Minnie Monster | Trad climb | E7 | 1 | ||
| Minotauro | Boulder problem | 8B | 1 |