| Seia to Blackburn | 952.28 mi (1,532.54 km) |
| Seia to Blackpool | 950.29 mi (1,529.34 km) |
| Seia to Blairgowrie | 1,134.34 mi (1,825.55 km) |
| Seia to Blandford Forum | 768.40 mi (1,236.62 km) |
| Seia to Blaydon | 1,041.57 mi (1,676.24 km) |
| Seia to Bletchley | 865.26 mi (1,392.50 km) |
| Seia to Bloxwich | 884.18 mi (1,422.96 km) |
| Seia to Blunsdon Saint Andrew | 822.75 mi (1,324.09 km) |
| Seia to Blyth | 1,054.78 mi (1,697.51 km) |
| Seia to Bo'ness | 1,093.37 mi (1,759.61 km) |
| Seia to Bodmin | 708.74 mi (1,140.60 km) |
| Seia to Bognor Regis | 791.45 mi (1,273.72 km) |
| Seia to Bolsover | 934.56 mi (1,504.03 km) |
| Seia to Bolton | 941.69 mi (1,515.50 km) |
| Seia to Bonhill | 1,084.53 mi (1,745.38 km) |
