| Ascoli Piceno to Oerlinghausen | 670.15 mi (1,078.51 km) |
| Ascoli Piceno to Oestrich-Winkel | 560.66 mi (902.29 km) |
| Ascoli Piceno to Offenburg | 474.10 mi (762.99 km) |
| Ascoli Piceno to Oftersheim | 509.93 mi (820.65 km) |
| Ascoli Piceno to Ohrdruf | 567.34 mi (913.05 km) |
| Ascoli Piceno to Ohringen | 480.31 mi (772.98 km) |
| Ascoli Piceno to Olbernhau | 540.21 mi (869.38 km) |
| Ascoli Piceno to Olching | 385.54 mi (620.47 km) |
| Ascoli Piceno to Oldenburg | 752.79 mi (1,211.49 km) |
| Ascoli Piceno to Oldenburg in Holstein | 800.53 mi (1,288.34 km) |
| Ascoli Piceno to Olfen | 677.46 mi (1,090.27 km) |
| Ascoli Piceno to Olpe | 625.62 mi (1,006.84 km) |
| Ascoli Piceno to Olsberg | 634.00 mi (1,020.33 km) |
| Ascoli Piceno to Oranienburg | 684.51 mi (1,101.62 km) |
| Ascoli Piceno to Ortenberg | 561.11 mi (903.02 km) |
