| Ovar to Oerlinghausen | 1,120.44 mi (1,803.17 km) |
| Ovar to Oestrich-Winkel | 1,020.13 mi (1,641.73 km) |
| Ovar to Offenburg | 965.58 mi (1,553.96 km) |
| Ovar to Oftersheim | 1,020.81 mi (1,642.83 km) |
| Ovar to Ohrdruf | 1,152.83 mi (1,855.30 km) |
| Ovar to Ohringen | 1,051.97 mi (1,692.98 km) |
| Ovar to Olbernhau | 1,249.39 mi (2,010.69 km) |
| Ovar to Olching | 1,101.02 mi (1,771.92 km) |
| Ovar to Oldenburg | 1,156.06 mi (1,860.50 km) |
| Ovar to Oldenburg in Holstein | 1,291.10 mi (2,077.83 km) |
| Ovar to Olfen | 1,066.41 mi (1,716.22 km) |
| Ovar to Olpe | 1,052.92 mi (1,694.51 km) |
| Ovar to Olsberg | 1,089.20 mi (1,752.89 km) |
| Ovar to Oranienburg | 1,311.63 mi (2,110.86 km) |
| Ovar to Ortenberg | 1,072.79 mi (1,726.49 km) |
