| Voluntari to Oerlinghausen | 953.97 mi (1,535.27 km) |
| Voluntari to Oestrich-Winkel | 931.13 mi (1,498.51 km) |
| Voluntari to Offenburg | 908.49 mi (1,462.07 km) |
| Voluntari to Oftersheim | 893.83 mi (1,438.48 km) |
| Voluntari to Ohrdruf | 839.63 mi (1,351.26 km) |
| Voluntari to Ohringen | 850.93 mi (1,369.44 km) |
| Voluntari to Olbernhau | 733.97 mi (1,181.21 km) |
| Voluntari to Olching | 752.80 mi (1,211.51 km) |
| Voluntari to Oldenburg | 1,008.40 mi (1,622.86 km) |
| Voluntari to Oldenburg in Holstein | 962.04 mi (1,548.26 km) |
| Voluntari to Olfen | 996.85 mi (1,604.28 km) |
| Voluntari to Olpe | 960.91 mi (1,546.44 km) |
| Voluntari to Olsberg | 943.44 mi (1,518.32 km) |
| Voluntari to Oranienburg | 819.82 mi (1,319.38 km) |
| Voluntari to Ortenberg | 894.79 mi (1,440.02 km) |
