| Seclin to Blackburn | 321.50 mi (517.41 km) |
| Seclin to Blackpool | 342.22 mi (550.75 km) |
| Seclin to Blairgowrie | 492.14 mi (792.02 km) |
| Seclin to Blandford Forum | 228.25 mi (367.34 km) |
| Seclin to Blaydon | 363.78 mi (585.44 km) |
| Seclin to Bletchley | 190.79 mi (307.05 km) |
| Seclin to Bloxwich | 258.89 mi (416.65 km) |
| Seclin to Blunsdon Saint Andrew | 221.64 mi (356.69 km) |
| Seclin to Blyth | 368.60 mi (593.21 km) |
| Seclin to Bo'ness | 466.41 mi (750.61 km) |
| Seclin to Bodmin | 340.33 mi (547.71 km) |
| Seclin to Bognor Regis | 163.08 mi (262.45 km) |
| Seclin to Bolsover | 261.12 mi (420.23 km) |
| Seclin to Bolton | 312.22 mi (502.47 km) |
| Seclin to Bonhill | 488.86 mi (786.74 km) |
