| Castenaso to Orthez | 611.92 mi (984.79 km) |
| Castenaso to Orvault | 657.02 mi (1,057.37 km) |
| Castenaso to Osny | 544.28 mi (875.93 km) |
| Castenaso to Ostwald | 331.36 mi (533.28 km) |
| Castenaso to Ouistreham | 643.36 mi (1,035.38 km) |
| Castenaso to Oullins | 335.25 mi (539.53 km) |
| Castenaso to Outreau | 627.39 mi (1,009.68 km) |
| Castenaso to Oyonnax | 306.81 mi (493.77 km) |
| Castenaso to Ozoir-la-Ferriere | 510.21 mi (821.10 km) |
| Castenaso to Pace | 678.95 mi (1,092.67 km) |
| Castenaso to Palaiseau | 524.89 mi (844.73 km) |
| Castenaso to Pamiers | 500.60 mi (805.63 km) |
| Castenaso to Panazol | 502.98 mi (809.47 km) |
| Castenaso to Pantin | 525.28 mi (845.36 km) |
| Castenaso to Paray-le-Monial | 380.37 mi (612.15 km) |
