| Cristuru Secuiesc to Oerlinghausen | 834.89 mi (1,343.63 km) |
| Cristuru Secuiesc to Oestrich-Winkel | 823.94 mi (1,326.01 km) |
| Cristuru Secuiesc to Offenburg | 812.32 mi (1,307.31 km) |
| Cristuru Secuiesc to Oftersheim | 790.33 mi (1,271.92 km) |
| Cristuru Secuiesc to Ohrdruf | 723.65 mi (1,164.60 km) |
| Cristuru Secuiesc to Ohringen | 747.70 mi (1,203.31 km) |
| Cristuru Secuiesc to Olbernhau | 614.33 mi (988.67 km) |
| Cristuru Secuiesc to Olching | 655.89 mi (1,055.55 km) |
| Cristuru Secuiesc to Oldenburg | 884.86 mi (1,424.05 km) |
| Cristuru Secuiesc to Oldenburg in Holstein | 831.73 mi (1,338.54 km) |
| Cristuru Secuiesc to Olfen | 880.55 mi (1,417.11 km) |
| Cristuru Secuiesc to Olpe | 847.78 mi (1,364.37 km) |
| Cristuru Secuiesc to Olsberg | 827.70 mi (1,332.05 km) |
| Cristuru Secuiesc to Oranienburg | 690.88 mi (1,111.87 km) |
| Cristuru Secuiesc to Ortenberg | 784.08 mi (1,261.86 km) |
