| Fagnano Olona to Oria | 567.88 mi (913.91 km) |
| Fagnano Olona to Oristano | 398.28 mi (640.97 km) |
| Fagnano Olona to Orta Nova | 455.15 mi (732.49 km) |
| Fagnano Olona to Orte | 282.09 mi (453.99 km) |
| Fagnano Olona to Ortona | 357.80 mi (575.82 km) |
| Fagnano Olona to Orvieto | 259.41 mi (417.48 km) |
| Fagnano Olona to Orzinuovi | 54.81 mi (88.21 km) |
| Fagnano Olona to Osimo | 272.67 mi (438.82 km) |
| Fagnano Olona to Ospitaletto | 58.82 mi (94.67 km) |
| Fagnano Olona to Ostuni | 555.27 mi (893.62 km) |
| Fagnano Olona to Ottaviano | 436.19 mi (701.98 km) |
| Fagnano Olona to Ovada | 71.80 mi (115.55 km) |
| Fagnano Olona to Ozieri | 351.19 mi (565.18 km) |
| Fagnano Olona to Paceco | 563.56 mi (906.96 km) |
| Fagnano Olona to Pachino | 697.63 mi (1,122.72 km) |
