|
Euskal Mendiak
| Nombre | Altitud | Zone | Ph. |
| Serantes | 451 | | 46 |
| Serlo Gaina | 919 | | 16 |
| Seseta | 1186 | | 12 |
| Sesiarte | 755 | Izarraitz | 31 |
| Sierra Alta | 1067 | | 10 |
| Sierra Alta | 707 | | 6 |
| Sierra Baja | 504 | | 5 |
| Sierra Grande | 450 | | 7 |
| Sierra Txikita | 994 | | 8 |
| Sierragaina | 1307 | | 11 |
| Siguesko Muga | 1173 | | 9 |
| Soila | 990 | | 37 |
| Solaiera | 1039 | Garobel / Sálvada | 56 |
| Solano Mayor | 823 | | 8 |
| Sollaundi | 1043 | | 17 |
| Sollube | 686 | | 14 |
| Somedera | 657 | | 5 |
| Somo | 902 | | 23 |
| Somorrubio | 570 | | 8 |
| Sopeña | 470 | | 8 |
| Soporro | 617 | | 21 |
| Soratxipi | 1069 | | 41 |
| Soroluzeta | 1013 | | 5 |
| Sorotepo | 1151 | | 17 |
| Sotoaldapa | 589 | | 5 |
| Soumcouy | 2315 | Larra | 11 |
| Sugizeaga | 567 | | 7 |
| Surgurin | 784 | | 8 |
| Tabar, Sierra de | 791 | | 16 |
| Taillon | 3144 | Gavarnie-Ordesa | 37 |
|
|