| Castrop-Rauxel to Ottendorf-Okrilla | 281.88 mi (453.65 km) |
| Castrop-Rauxel to Ottersberg | 132.14 mi (212.65 km) |
| Castrop-Rauxel to Ottobrunn | 308.99 mi (497.27 km) |
| Castrop-Rauxel to Ottweiler | 151.00 mi (243.00 km) |
| Castrop-Rauxel to Overath | 41.46 mi (66.73 km) |
| Castrop-Rauxel to Oyten | 126.74 mi (203.97 km) |
| Castrop-Rauxel to Paderborn | 62.73 mi (100.96 km) |
| Castrop-Rauxel to Papenburg | 104.85 mi (168.74 km) |
| Castrop-Rauxel to Parchim | 229.61 mi (369.52 km) |
| Castrop-Rauxel to Pasewalk | 311.42 mi (501.18 km) |
| Castrop-Rauxel to Passau | 341.32 mi (549.30 km) |
| Castrop-Rauxel to Pattensen | 115.57 mi (185.99 km) |
| Castrop-Rauxel to Pegnitz | 222.80 mi (358.57 km) |
| Castrop-Rauxel to Peine | 135.16 mi (217.53 km) |
| Castrop-Rauxel to Peissenberg | 308.67 mi (496.75 km) |
