| Cattolica to Oerlinghausen | 583.65 mi (939.29 km) |
| Cattolica to Oestrich-Winkel | 472.58 mi (760.54 km) |
| Cattolica to Offenburg | 386.26 mi (621.63 km) |
| Cattolica to Oftersheim | 421.86 mi (678.91 km) |
| Cattolica to Ohrdruf | 483.17 mi (777.59 km) |
| Cattolica to Ohringen | 392.74 mi (632.05 km) |
| Cattolica to Olbernhau | 463.77 mi (746.37 km) |
| Cattolica to Olching | 300.25 mi (483.21 km) |
| Cattolica to Oldenburg | 666.58 mi (1,072.75 km) |
| Cattolica to Oldenburg in Holstein | 718.78 mi (1,156.76 km) |
| Cattolica to Olfen | 589.77 mi (949.14 km) |
| Cattolica to Olpe | 537.85 mi (865.59 km) |
| Cattolica to Olsberg | 546.90 mi (880.15 km) |
| Cattolica to Oranienburg | 607.61 mi (977.85 km) |
| Cattolica to Ortenberg | 473.90 mi (762.67 km) |
