| Wassenaar to Oerlinghausen | 181.68 mi (292.38 km) |
| Wassenaar to Oestrich-Winkel | 215.57 mi (346.93 km) |
| Wassenaar to Offenburg | 298.37 mi (480.18 km) |
| Wassenaar to Oftersheim | 265.11 mi (426.66 km) |
| Wassenaar to Ohrdruf | 287.24 mi (462.26 km) |
| Wassenaar to Ohringen | 302.21 mi (486.36 km) |
| Wassenaar to Olbernhau | 398.12 mi (640.72 km) |
| Wassenaar to Olching | 409.75 mi (659.43 km) |
| Wassenaar to Oldenburg | 173.98 mi (279.99 km) |
| Wassenaar to Oldenburg in Holstein | 306.40 mi (493.11 km) |
| Wassenaar to Olfen | 130.56 mi (210.12 km) |
| Wassenaar to Olpe | 166.88 mi (268.58 km) |
| Wassenaar to Olsberg | 183.17 mi (294.79 km) |
| Wassenaar to Oranienburg | 374.19 mi (602.20 km) |
| Wassenaar to Ortenberg | 236.35 mi (380.38 km) |
