| Ancona to Oerlinghausen | 618.94 mi (996.08 km) |
| Ancona to Oestrich-Winkel | 512.08 mi (824.12 km) |
| Ancona to Offenburg | 428.70 mi (689.92 km) |
| Ancona to Oftersheim | 461.36 mi (742.49 km) |
| Ancona to Ohrdruf | 514.99 mi (828.79 km) |
| Ancona to Ohringen | 430.46 mi (692.75 km) |
| Ancona to Olbernhau | 487.17 mi (784.02 km) |
| Ancona to Olching | 333.82 mi (537.23 km) |
| Ancona to Oldenburg | 701.31 mi (1,128.65 km) |
| Ancona to Oldenburg in Holstein | 747.60 mi (1,203.14 km) |
| Ancona to Olfen | 627.68 mi (1,010.15 km) |
| Ancona to Olpe | 576.02 mi (927.01 km) |
| Ancona to Olsberg | 583.37 mi (938.84 km) |
| Ancona to Oranienburg | 631.47 mi (1,016.25 km) |
| Ancona to Ortenberg | 510.66 mi (821.83 km) |
