| Porto Recanati to Oerlinghausen | 633.45 mi (1,019.43 km) |
| Porto Recanati to Oestrich-Winkel | 526.84 mi (847.86 km) |
| Porto Recanati to Offenburg | 443.36 mi (713.53 km) |
| Porto Recanati to Oftersheim | 476.12 mi (766.24 km) |
| Porto Recanati to Ohrdruf | 529.15 mi (851.59 km) |
| Porto Recanati to Ohringen | 445.15 mi (716.41 km) |
| Porto Recanati to Olbernhau | 500.10 mi (804.83 km) |
| Porto Recanati to Olching | 348.24 mi (560.44 km) |
| Porto Recanati to Oldenburg | 715.76 mi (1,151.90 km) |
| Porto Recanati to Oldenburg in Holstein | 761.30 mi (1,225.20 km) |
| Porto Recanati to Olfen | 642.37 mi (1,033.79 km) |
| Porto Recanati to Olpe | 590.73 mi (950.69 km) |
| Porto Recanati to Olsberg | 597.98 mi (962.35 km) |
| Porto Recanati to Oranienburg | 644.40 mi (1,037.06 km) |
| Porto Recanati to Ortenberg | 525.30 mi (845.38 km) |
