| Calafat to Oerlinghausen | 858.15 mi (1,381.06 km) |
| Calafat to Oestrich-Winkel | 816.11 mi (1,313.40 km) |
| Calafat to Offenburg | 780.34 mi (1,255.83 km) |
| Calafat to Oftersheim | 774.51 mi (1,246.45 km) |
| Calafat to Ohrdruf | 740.16 mi (1,191.17 km) |
| Calafat to Ohringen | 732.01 mi (1,178.05 km) |
| Calafat to Olbernhau | 644.16 mi (1,036.67 km) |
| Calafat to Olching | 628.29 mi (1,011.13 km) |
| Calafat to Oldenburg | 921.27 mi (1,482.64 km) |
| Calafat to Oldenburg in Holstein | 895.00 mi (1,440.37 km) |
| Calafat to Olfen | 895.15 mi (1,440.61 km) |
| Calafat to Olpe | 854.36 mi (1,374.96 km) |
| Calafat to Olsberg | 841.58 mi (1,354.39 km) |
| Calafat to Oranienburg | 751.00 mi (1,208.61 km) |
| Calafat to Ortenberg | 785.50 mi (1,264.14 km) |
