Ordered by the number of ascents recorded.
| Climb Name | Type | Grade | # Ascents Recorded | Notes | Exclude Reason |
|---|---|---|---|---|---|
| Nutsa | Boulder problem | 8A | 1 | ||
| Nuts Are Not the Only Fruit | Sport route | 8c | 1 | ||
| Nutty Land | Trad climb | E1 | 1 | ||
| Nu World | Sport route | 9a+ | 1 | ||
| Obelis'c | Boulder problem | 8B | 1 | ||
| Obrint el Sistema | Sport route | 9a+ | 1 | ||
| Obsesja | Boulder problem | 8C | 1 |
The first 8C in Poland. |
|
| Obsession | Sport route | 9b | 1 | ||
| Obsidian | Boulder problem | 8C+ | 1 | ||
| Occam's Razor | Deep water solo | 7c+ | 1 |
FSA. Neil Gresham, Sep/2011 |
|
| Occam's Razor | Boulder problem | 8B | 1 | ||
| Octopus | Boulder problem | 8B | 1 | ||
| Odins Bue | Boulder problem | 8A | 1 | ||
| Óð til Sigurs | Boulder problem | 8A+ | 1 | ||
| Offbeat | Trad climb | E8 | 1 | ||
| Offspring | Trad climb | E5 | 1 | ||
| Off the Ground | Boulder problem | 8B | 1 | ||
| Off the Mark | Trad climb | E7 | 1 | ||
| Off to Devon | Boulder problem (indoor) | 8B | 1 | ||
| Öga för Öga | Boulder problem | 8C | 1 |