| Ascoli Piceno to Octeville | 862.82 mi (1,388.58 km) |
| Ascoli Piceno to Oignies | 726.16 mi (1,168.64 km) |
| Ascoli Piceno to Oissel | 746.37 mi (1,201.16 km) |
| Ascoli Piceno to Olivet | 663.58 mi (1,067.92 km) |
| Ascoli Piceno to Ollioules | 391.34 mi (629.80 km) |
| Ascoli Piceno to Olonne-sur-Mer | 794.54 mi (1,278.69 km) |
| Ascoli Piceno to Oloron-Sainte-Marie | 716.32 mi (1,152.81 km) |
| Ascoli Piceno to Onet Village | 559.23 mi (900.00 km) |
| Ascoli Piceno to Onnaing | 702.91 mi (1,131.22 km) |
| Ascoli Piceno to Orange | 448.45 mi (721.71 km) |
| Ascoli Piceno to Orchies | 718.33 mi (1,156.04 km) |
| Ascoli Piceno to Orleans | 664.45 mi (1,069.33 km) |
| Ascoli Piceno to Orly | 674.45 mi (1,085.43 km) |
| Ascoli Piceno to Ormesson-sur-Marne | 670.50 mi (1,079.06 km) |
| Ascoli Piceno to Orsay | 680.64 mi (1,095.38 km) |
