| Climbs | Cracks, by jamming |
| Sizes | Finger to offwidth to chimney |
| Key to | Traditional climbing |
| Difficulty | Intermediate to advanced |
Crack climbing is the discipline of ascending cracks in the rock by jamming hands, fingers, feet, or the whole body into the fissure, rather than using holds on the rock’s face. It spans sizes from thin finger cracks to body-swallowing offwidths and chimneys, and is a foundational skill for traditional climbing.
How it works
You jam body parts into the crack and lock them — finger locks for thin cracks, hand jams for medium, arm bars for offwidths.
Crack vs face
It contrasts with face climbing — see crack vs face.
Why it matters
Reliable cracks take gear well, making crack skills central to trad climbing.
Frequently asked questions
How do you climb cracks?
By jamming — wedging part of your body into the crack and expanding or torquing it to lock in place. The technique is sized to the crack: finger locks for thin cracks, hand and fist jams for medium ones, and arm bars or chicken-wings for offwidths and chimneys.
Is crack climbing harder than face climbing?
It's different, not strictly harder. Crack climbing relies on jamming technique and trust rather than the grip strength face climbing rewards, so it feels awkward at first. Strong face climbers often struggle on cracks until they learn to jam efficiently.
What is an offwidth?
An offwidth is a crack too wide to hand-jam but too narrow to fit your whole body — the most awkward and strenuous size. It needs specialised techniques like arm bars and chicken-wings, and is notoriously physical and hard to protect.
Sources
- Crack climbing technique — American Alpine Club