| Castellanza to Orthez | 497.98 mi (801.43 km) |
| Castellanza to Orvault | 513.42 mi (826.27 km) |
| Castellanza to Osny | 398.58 mi (641.45 km) |
| Castellanza to Ostwald | 210.28 mi (338.42 km) |
| Castellanza to Ouistreham | 496.65 mi (799.27 km) |
| Castellanza to Oullins | 197.66 mi (318.11 km) |
| Castellanza to Outreau | 486.31 mi (782.63 km) |
| Castellanza to Oyonnax | 162.02 mi (260.75 km) |
| Castellanza to Ozoir-la-Ferriere | 364.47 mi (586.56 km) |
| Castellanza to Pace | 533.01 mi (857.80 km) |
| Castellanza to Palaiseau | 378.63 mi (609.34 km) |
| Castellanza to Pamiers | 399.13 mi (642.34 km) |
| Castellanza to Panazol | 366.26 mi (589.44 km) |
| Castellanza to Pantin | 379.54 mi (610.81 km) |
| Castellanza to Paray-le-Monial | 236.40 mi (380.46 km) |
