Ordered by the number of ascents recorded.
| Climb Name | Type | Grade | # Ascents Recorded | Notes | Exclude Reason |
|---|---|---|---|---|---|
| Inkerman Groove | Trad climb | VS | 1 | ||
| In Loving Memory | Trad climb | E6 | 1 | ||
| Insanity | Trad climb | E2 | 1 | ||
| International Kidney Dealer | Trad climb | E7 | 1 | ||
| Interrogation | Trad climb | E3 | 1 | ||
| Interstate | Trad climb | E1 | 1 | ||
| In the Heat of the Night | Trad climb | E6 | 1 | ||
| Into the Dread | Trad climb | E7 | 1 | ||
| Into the Light | Trad climb | E8 | 1 | ||
| I Ran the Bath | Trad climb | E7 | 1 |
Now more typically done as a DWS at about 7b. |
|
| Ironman | Trad climb | E5 | 1 | ||
| I Scream | Trad climb | E6 | 1 |
The first E6 on Lundy. |
|
| Isinglas | Trad climb | E8 | 1 | ||
| It Hurts | Trad climb | E7 | 1 | ||
| It's a Broad Church | Trad climb | E7 | 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 | ||
| 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. |