| Climb Name | Type | Grade | # Ascents Recorded | Notes | Exclude Reason |
|---|---|---|---|---|---|
| Off-Kilter | Boulder problem (indoor) | 8B+ | 2 |
A long power-enduro boulder set at 55° by Sean Houchins-McCallum on the Tension Board 2 Mirror. |
|
| Okami | Sport route | 8c | 2 | ||
| Old Friends | Trad climb | E4 | 2 | ||
| Old Holborn | Trad climb | E1 | 2 | ||
| Old Man Winter | Boulder problem | 8B+ | 2 | ||
| Om | Sport route | 9a | 2 | ||
| Omaha Beach (pre break) | Sport route | 8b | 2 |
References[1] https://fanatic-climbing.com/il-etait-une-voie-omaha-beach-once-upon-a-line-omaha-beach/ |
|
| One Hundred Years of Solitude | Trad climb | E8 | 2 | ||
| One Infinity | Boulder problem | 8A+ | 2 |
Climb All Elements (8A) into a pumpy lip traverse |
|
| One Slap | Sport route | 9b | 2 | ||
| One Step Beyond Direct | Trad climb | E6 | 2 |
Direct start to One Step Beyond at Curbar. Superseded by Slab and Crack. |
|
| Opeless | Trad climb | E7 | 2 | ||
| Open Air | Sport route | 9a+ | 2 |
Originally given 9a but later upgraded following repeat ascents. This makes it the first 9a+ in the world, 7 years before Biographie was climbed. |
|
| Open Your Mind | Sport route | 8c+ | 2 | ||
| Opus | Trad climb | E4 | 2 | ||
| Orange Robe Burning | Trad climb | E6 | 2 | ||
| Origens | Sport route | 8c | 2 |
São Bento do Sapucaí in Brazil. 8C/C+ (11a/bBr). |
|
| Original Route | Trad climb | HS | 2 |
One of the earliest routes on peak limestone. |
|
| Osapska Pošast Extension | Sport route | 8c | 2 | ||
| Os Bacanos | Boulder problem | 8B | 2 |