| Gliwice to Oerlinghausen | 448.57 mi (721.90 km) |
| Gliwice to Oestrich-Winkel | 472.34 mi (760.15 km) |
| Gliwice to Offenburg | 498.42 mi (802.12 km) |
| Gliwice to Oftersheim | 453.42 mi (729.71 km) |
| Gliwice to Ohrdruf | 350.13 mi (563.48 km) |
| Gliwice to Ohringen | 415.80 mi (669.17 km) |
| Gliwice to Olbernhau | 235.96 mi (379.74 km) |
| Gliwice to Olching | 361.24 mi (581.37 km) |
| Gliwice to Oldenburg | 488.59 mi (786.31 km) |
| Gliwice to Oldenburg in Holstein | 429.94 mi (691.92 km) |
| Gliwice to Olfen | 499.98 mi (804.64 km) |
| Gliwice to Olpe | 476.86 mi (767.43 km) |
| Gliwice to Olsberg | 450.23 mi (724.57 km) |
| Gliwice to Oranienburg | 289.09 mi (465.25 km) |
| Gliwice to Ortenberg | 423.76 mi (681.97 km) |
