| Castrop-Rauxel to Orthez | 671.93 mi (1,081.36 km) |
| Castrop-Rauxel to Orvault | 498.29 mi (801.93 km) |
| Castrop-Rauxel to Osny | 288.64 mi (464.52 km) |
| Castrop-Rauxel to Ostwald | 207.95 mi (334.66 km) |
| Castrop-Rauxel to Ouistreham | 368.34 mi (592.78 km) |
| Castrop-Rauxel to Oullins | 419.05 mi (674.39 km) |
| Castrop-Rauxel to Outreau | 254.88 mi (410.18 km) |
| Castrop-Rauxel to Oyonnax | 373.45 mi (601.00 km) |
| Castrop-Rauxel to Ozoir-la-Ferriere | 280.61 mi (451.60 km) |
| Castrop-Rauxel to Pace | 467.79 mi (752.84 km) |
| Castrop-Rauxel to Palaiseau | 297.91 mi (479.44 km) |
| Castrop-Rauxel to Pamiers | 640.56 mi (1,030.88 km) |
| Castrop-Rauxel to Panazol | 480.01 mi (772.51 km) |
| Castrop-Rauxel to Pantin | 284.17 mi (457.34 km) |
| Castrop-Rauxel to Paray-le-Monial | 380.85 mi (612.92 km) |
