| Climber Name | # Ascents Recorded | Notes |
|---|---|---|
| Chris Weidner | 1 | |
| Chris Wentworth | 1 | |
| Cintia Percivati | 1 | |
| Claire Wagstaff | 1 | |
| Clark Alston | 1 | References[1] The Shale Trail: Adventure Climbing in the South West by Clark Alston. On The Edge 117, page 38. |
| Claude Dean Frankland | 1 | |
| Claude Lorenzi | 1 | |
| Claudie Dunn | 1 | |
| Clay Gordon | 1 | |
| Cole Bradburn | 1 | |
| Colin Rowe | 1 | |
| Colin Wills | 1 | |
| Connie Rawlins | 1 | |
| Connie Shang | 1 | |
| Connor Baty | 1 | |
| Conrad Piper-Ruth | 1 | |
| Cooper Doe | 1 | |
| Coral Dawson | 1 | |
| Craig Devonshire | 1 | |
| Craig Leubben | 1 |