| Castano Primo to Orthez | 490.63 mi (789.60 km) |
| Castano Primo to Orvault | 508.60 mi (818.51 km) |
| Castano Primo to Osny | 396.55 mi (638.18 km) |
| Castano Primo to Ostwald | 213.19 mi (343.10 km) |
| Castano Primo to Ouistreham | 493.92 mi (794.88 km) |
| Castano Primo to Oullins | 191.57 mi (308.30 km) |
| Castano Primo to Outreau | 485.60 mi (781.50 km) |
| Castano Primo to Oyonnax | 157.32 mi (253.19 km) |
| Castano Primo to Ozoir-la-Ferriere | 362.44 mi (583.29 km) |
| Castano Primo to Pace | 528.92 mi (851.21 km) |
| Castano Primo to Palaiseau | 376.29 mi (605.59 km) |
| Castano Primo to Pamiers | 391.40 mi (629.90 km) |
| Castano Primo to Panazol | 360.29 mi (579.83 km) |
| Castano Primo to Pantin | 377.50 mi (607.53 km) |
| Castano Primo to Paray-le-Monial | 231.54 mi (372.62 km) |
