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Euskal Mendiak
| Nombre | Altitud | Zone | Ph. |
| Campaña | 615 | | 5 |
| Canteras | 791 | | 8 |
| Cantoblanco | 1006 | | 23 |
| Capaburros | 753 | | 8 |
| Carrascal | 1193 | | 6 |
| Carrias | 1130 | | 28 |
| Castejon | 655 | | 8 |
| Castillar | 481 | | 8 |
| Castillete | 1038 | | 16 |
| Castillo | 938 | | 20 |
| Castillo de Achert | 2384 | Oza | 57 |
| Castillo de Lapoblación | 1245 | Toloño | 31 |
| Castro Grande | 1094 | Peña mendiak | 11 |
| Castro Valnera | 1718 | Lunada | 10 |
| Caton | 480 | | 6 |
| Cavigordo | 551 | | 7 |
| Cellorigo | 907 | | 5 |
| Cerredo | 644 | | 5 |
| Cerro | 900 | | 11 |
| Cerros Viejos | 923 | | 6 |
| Certascan | 2853 | Certascan | 8 |
| Cervera | 1384 | Toloño | 24 |
| Chipeta | 2175 | | 21 |
| Cogolla | 1071 | | 16 |
| Collarada | 2883 | Collarada | 44 |
| Corona | 1189 | | 4 |
| Corona/Errazu | 1387 | | 36 |
| Costalera | 1234 | Kodes | 24 |
| Costoria | 1032 | µrcena | 22 |
| Cotero | 1500 | Montes del Somo | 0 |
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