| Seaham to Ayamonte | 1,251.86 mi (2,014.67 km) |
| Seaham to Azcoitia | 806.86 mi (1,298.52 km) |
| Seaham to Azpeitia | 806.57 mi (1,298.05 km) |
| Seaham to Azuqueca de Henares | 990.30 mi (1,593.73 km) |
| Seaham to Badajoz | 1,133.48 mi (1,824.16 km) |
| Seaham to Badalona | 940.54 mi (1,513.65 km) |
| Seaham to Baena | 1,198.22 mi (1,928.34 km) |
| Seaham to Baeza | 1,168.95 mi (1,881.24 km) |
| Seaham to Bailen | 1,163.34 mi (1,872.22 km) |
| Seaham to Balaguer | 906.90 mi (1,459.52 km) |
| Seaham to Banolas | 898.41 mi (1,445.85 km) |
| Seaham to Baranain | 832.01 mi (1,339.00 km) |
| Seaham to Barbadanes | 915.96 mi (1,474.10 km) |
| Seaham to Barbastro | 887.16 mi (1,427.75 km) |
| Seaham to Barcelona | 943.57 mi (1,518.52 km) |
