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Euskal Mendiak
| Nombre | Altitud | Zone | Ph. |
| Belkoain | 488 | | 43 |
| Belokain | 973 | | 26 |
| Beloki | 1271 | Aralar | 49 |
| Beloriz | 770 | | 8 |
| Belozkarre | 1173 | Bosmendieta | 13 |
| Beltxu | 1129 | Arbaila | 8 |
| Beorkolarre | 1006 | | 18 |
| Beorzulo | 1229 | | 7 |
| Beratxa | 0 | | 6 |
| Beratza / Askuren | 708 | | 28 |
| Beriain | 1493 | Andia | 123 |
| Berreaga | 364 | | 15 |
| Berregu | 1096 | | 13 |
| Berrendi | 1354 | Abodi | 34 |
| Berretin | 1226 | Gorbeia | 18 |
| Berros | 662 | | 8 |
| Betatugaña | 995 | | 14 |
| Beuntzako Gaina | 787 | | 8 |
| Bianditz | 840 | | 47 |
| Bidango Gaina | 780 | | 12 |
| Biezkas | 575 | | 5 |
| Bigas | 700 | | 5 |
| Bigate | 1124 | | 31 |
| Bikirrio (Beraskola) | 665 | | 17 |
| Binbaleta | 1758 | | 22 |
| Bisaurin | 2670 | Bisaurin | 36 |
| Biskaxun | 973 | | 6 |
| Bizkai | 826 | | 22 |
| Bizkailuz | 1341 | Areta | 21 |
| Bizkailuze | 704 | | 10 |
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