| Gradsko to Oerlinghausen | 950.93 mi (1,530.38 km) |
| Gradsko to Oestrich-Winkel | 886.21 mi (1,426.22 km) |
| Gradsko to Offenburg | 831.42 mi (1,338.04 km) |
| Gradsko to Oftersheim | 839.76 mi (1,351.46 km) |
| Gradsko to Ohrdruf | 832.31 mi (1,339.47 km) |
| Gradsko to Ohringen | 799.37 mi (1,286.46 km) |
| Gradsko to Olbernhau | 750.14 mi (1,207.23 km) |
| Gradsko to Olching | 691.63 mi (1,113.07 km) |
| Gradsko to Oldenburg | 1,021.80 mi (1,644.43 km) |
| Gradsko to Oldenburg in Holstein | 1,014.52 mi (1,632.72 km) |
| Gradsko to Olfen | 980.24 mi (1,577.55 km) |
| Gradsko to Olpe | 934.57 mi (1,504.05 km) |
| Gradsko to Olsberg | 927.87 mi (1,493.26 km) |
| Gradsko to Oranienburg | 872.39 mi (1,403.97 km) |
| Gradsko to Ortenberg | 864.26 mi (1,390.89 km) |
