| Castel Bolognese to Orthez | 627.81 mi (1,010.36 km) |
| Castel Bolognese to Orvault | 677.08 mi (1,089.65 km) |
| Castel Bolognese to Osny | 565.30 mi (909.77 km) |
| Castel Bolognese to Ostwald | 351.25 mi (565.29 km) |
| Castel Bolognese to Ouistreham | 664.33 mi (1,069.13 km) |
| Castel Bolognese to Oullins | 354.76 mi (570.94 km) |
| Castel Bolognese to Outreau | 648.25 mi (1,043.26 km) |
| Castel Bolognese to Oyonnax | 327.25 mi (526.66 km) |
| Castel Bolognese to Ozoir-la-Ferriere | 531.23 mi (854.94 km) |
| Castel Bolognese to Pace | 699.47 mi (1,125.68 km) |
| Castel Bolognese to Palaiseau | 545.90 mi (878.54 km) |
| Castel Bolognese to Pamiers | 515.20 mi (829.13 km) |
| Castel Bolognese to Panazol | 522.09 mi (840.22 km) |
| Castel Bolognese to Pantin | 546.31 mi (879.20 km) |
| Castel Bolognese to Paray-le-Monial | 400.62 mi (644.74 km) |
