| Castel San Giorgio to Orthez | 813.10 mi (1,308.56 km) |
| Castel San Giorgio to Orvault | 923.94 mi (1,486.94 km) |
| Castel San Giorgio to Osny | 840.12 mi (1,352.04 km) |
| Castel San Giorgio to Ostwald | 636.50 mi (1,024.34 km) |
| Castel San Giorgio to Ouistreham | 934.15 mi (1,503.37 km) |
| Castel San Giorgio to Oullins | 602.56 mi (969.72 km) |
| Castel San Giorgio to Outreau | 929.60 mi (1,496.04 km) |
| Castel San Giorgio to Oyonnax | 589.53 mi (948.75 km) |
| Castel San Giorgio to Ozoir-la-Ferriere | 806.08 mi (1,297.26 km) |
| Castel San Giorgio to Pace | 955.52 mi (1,537.76 km) |
| Castel San Giorgio to Palaiseau | 818.96 mi (1,317.99 km) |
| Castel San Giorgio to Pamiers | 690.87 mi (1,111.84 km) |
| Castel San Giorgio to Panazol | 757.06 mi (1,218.37 km) |
| Castel San Giorgio to Pantin | 821.08 mi (1,321.41 km) |
| Castel San Giorgio to Paray-le-Monial | 657.45 mi (1,058.06 km) |
