| Wilhelmshaven to Oerlinghausen | 110.44 mi (177.73 km) |
| Wilhelmshaven to Oestrich-Winkel | 243.84 mi (392.43 km) |
| Wilhelmshaven to Offenburg | 349.82 mi (562.99 km) |
| Wilhelmshaven to Oftersheim | 288.03 mi (463.54 km) |
| Wilhelmshaven to Ohrdruf | 217.23 mi (349.60 km) |
| Wilhelmshaven to Ohringen | 305.05 mi (490.93 km) |
| Wilhelmshaven to Olbernhau | 297.08 mi (478.10 km) |
| Wilhelmshaven to Olching | 393.80 mi (633.76 km) |
| Wilhelmshaven to Oldenburg | 26.95 mi (43.38 km) |
| Wilhelmshaven to Oldenburg in Holstein | 124.96 mi (201.11 km) |
| Wilhelmshaven to Olfen | 128.80 mi (207.29 km) |
| Wilhelmshaven to Olpe | 173.94 mi (279.92 km) |
| Wilhelmshaven to Olsberg | 151.36 mi (243.60 km) |
| Wilhelmshaven to Oranienburg | 219.24 mi (352.83 km) |
| Wilhelmshaven to Ortenberg | 222.91 mi (358.75 km) |
