| Castrop-Rauxel to Bougival | 294.55 mi (474.03 km) |
| Castrop-Rauxel to Bouguenais | 502.43 mi (808.59 km) |
| Castrop-Rauxel to Boulogne-Billancourt | 292.45 mi (470.65 km) |
| Castrop-Rauxel to Boulogne-sur-Mer | 253.59 mi (408.11 km) |
| Castrop-Rauxel to Bourg-de-Peage | 461.80 mi (743.19 km) |
| Castrop-Rauxel to Bourg-en-Bresse | 381.21 mi (613.50 km) |
| Castrop-Rauxel to Bourg-la-Reine | 292.53 mi (470.79 km) |
| Castrop-Rauxel to Bourg-les-Valence | 469.52 mi (755.63 km) |
| Castrop-Rauxel to Bourges | 379.69 mi (611.06 km) |
| Castrop-Rauxel to Bourgoin-Jallieu | 422.48 mi (679.91 km) |
| Castrop-Rauxel to Bressuire | 479.21 mi (771.22 km) |
| Castrop-Rauxel to Brest | 567.48 mi (913.27 km) |
| Castrop-Rauxel to Bretigny-sur-Orge | 300.84 mi (484.16 km) |
| Castrop-Rauxel to Breuillet | 307.43 mi (494.77 km) |
| Castrop-Rauxel to Briancon | 460.82 mi (741.63 km) |
