| Seia to Berga | 508.98 mi (819.12 km) |
| Seia to Berja | 356.19 mi (573.23 km) |
| Seia to Bermeo | 329.06 mi (529.57 km) |
| Seia to Berriozar | 353.19 mi (568.41 km) |
| Seia to Betanzos | 199.14 mi (320.48 km) |
| Seia to Betera | 387.31 mi (623.31 km) |
| Seia to Bilbao | 314.36 mi (505.91 km) |
| Seia to Binefar | 427.78 mi (688.44 km) |
| Seia to Binisalem | 559.21 mi (899.96 km) |
| Seia to Blanes | 553.28 mi (890.42 km) |
| Seia to Boadilla del Monte | 201.33 mi (324.01 km) |
| Seia to Boiro | 165.93 mi (267.04 km) |
| Seia to Bolanos de Calatrava | 237.16 mi (381.67 km) |
| Seia to Bollullos de la Mitacion | 229.48 mi (369.31 km) |
| Seia to Bollullos par del Condado | 222.26 mi (357.69 km) |
