| Name | Type |
|---|---|
| Climbers' Guide to Castle Rock Cleeve Hill (1988) | Guidebook |
| Climbing in the Ogwen District (1910) | Guidebook |
| Climbing in the Ogwen District Supplement (1921) | Guidebook |
| Climbs above Troedyrhiw | Guidebook |
| Clogwyn Du'r Arddu (1967) | Guidebook |
| Clogwyn Du'r Arddu (1963) | Guidebook |
| Clogwyn Du'r Arddu (1976) | Guidebook |
| Clogwyn Du'r Arddu (1988) | Guidebook |
| Clogwyn Du'r Arddu Interim Guide (1942) | Guidebook |
| Cléder Bouldering Topo | Guidebook |
| Coe Crag West (2026) | Guidebook |
| Cornwall (1950) | Guidebook |
| Cornwall Supplement (1955) | Guidebook |
| Cornwall Volume I (1968) | Guidebook |
| Cornwall Volume II (1966) | Guidebook |
| Cornwall-West Penwith (1984) | Guidebook |
| Craig Lundie - Rock Climbing Guide (2020) | Guidebook |
| Craig Yr Ysfa Interim Guide (1943) | Guidebook |
| Craig y Longridge (2017) | Guidebook |
| Creag Dhubh na Caillich Dry Tooling Miniguide (2023) | Guidebook |