Ordered by the number of ascents recorded.
| Climb Name | Type | Grade | # Ascents Recorded | Notes | Exclude Reason |
|---|---|---|---|---|---|
| Irréversible | Boulder problem | 7C | 1 | ||
| I Scream | Trad climb | E6 | 1 |
The first E6 on Lundy. |
|
| Isinglas | Trad climb | E8 | 1 | ||
| Isla Hold ‘em | Boulder problem | 8B | 1 |
Links Isla de Encanta (8B) into Texas Hold 'Em (7B+) |
|
| It Hurts | Trad climb | E7 | 1 | ||
| It's Malignant | Boulder problem | 8B | 1 | ||
| Ivan Dobsky | Boulder problem | 8A+ | 1 | ||
| I've Been a Bad, Bad Boy | Sport route | 7c+ | 1 | ||
| Ivy Sepulchre | Trad climb | E1 | 1 |
Named before its first ascent. References[1] https://climbing-history.org/library/7250/three-cliffs-in-llanberis-interim-guide |
|
| I Was a Teenage Caveman | Trad climb | E7 | 1 |
Previously a top rope problem before Mike Adams made the first solo ascent a long way above pads. |
|
| I Will Be My Own Hell | Trad climb | E7 | 1 | ||
| Jabberwocky SD | Boulder problem | 8B | 1 | ||
| Jacala | Deep water solo | 7c+ | 1 | ||
| Jack the Chipper | Boulder problem | 7C | 1 | ||
| Jack the Groove | Trad climb | E6 | 1 | ||
| Jack Yer Body | Trad climb | E4 | 1 |
Named after a car jack which was used to protect the first ascent. |
|
| Jah Fingers | Boulder problem | 8A | 1 | ||
| Jahzara Dreaming | Boulder problem | 8B | 1 | ||
| Jamming | Boulder problem | 8B | 1 | ||
| Jamming Destruction | Sport route | 9b | 1 |