| Hoek van Holland to Oerlinghausen | 193.13 mi (310.81 km) |
| Hoek van Holland to Oestrich-Winkel | 216.94 mi (349.13 km) |
| Hoek van Holland to Offenburg | 295.29 mi (475.22 km) |
| Hoek van Holland to Oftersheim | 265.62 mi (427.47 km) |
| Hoek van Holland to Ohrdruf | 295.47 mi (475.51 km) |
| Hoek van Holland to Ohringen | 303.90 mi (489.08 km) |
| Hoek van Holland to Olbernhau | 407.38 mi (655.61 km) |
| Hoek van Holland to Olching | 411.71 mi (662.59 km) |
| Hoek van Holland to Oldenburg | 189.43 mi (304.86 km) |
| Hoek van Holland to Oldenburg in Holstein | 322.37 mi (518.80 km) |
| Hoek van Holland to Olfen | 140.10 mi (225.47 km) |
| Hoek van Holland to Olpe | 172.69 mi (277.92 km) |
| Hoek van Holland to Olsberg | 191.62 mi (308.38 km) |
| Hoek van Holland to Oranienburg | 387.69 mi (623.92 km) |
| Hoek van Holland to Ortenberg | 241.11 mi (388.03 km) |
