| Campia Turzii to Oerlinghausen | 779.38 mi (1,254.28 km) |
| Campia Turzii to Oestrich-Winkel | 766.47 mi (1,233.51 km) |
| Campia Turzii to Offenburg | 754.52 mi (1,214.29 km) |
| Campia Turzii to Oftersheim | 732.62 mi (1,179.03 km) |
| Campia Turzii to Ohrdruf | 667.33 mi (1,073.96 km) |
| Campia Turzii to Ohringen | 689.96 mi (1,110.39 km) |
| Campia Turzii to Olbernhau | 558.81 mi (899.31 km) |
| Campia Turzii to Olching | 598.10 mi (962.54 km) |
| Campia Turzii to Oldenburg | 830.82 mi (1,337.08 km) |
| Campia Turzii to Oldenburg in Holstein | 781.42 mi (1,257.57 km) |
| Campia Turzii to Olfen | 824.39 mi (1,326.73 km) |
| Campia Turzii to Olpe | 791.02 mi (1,273.02 km) |
| Campia Turzii to Olsberg | 771.40 mi (1,241.44 km) |
| Campia Turzii to Oranienburg | 639.53 mi (1,029.23 km) |
| Campia Turzii to Ortenberg | 726.95 mi (1,169.91 km) |
