| Castel San Giorgio to Oberriet | 518.13 mi (833.85 km) |
| Castel San Giorgio to Obersiggenthal | 561.26 mi (903.25 km) |
| Castel San Giorgio to Oberwil | 584.03 mi (939.91 km) |
| Castel San Giorgio to Oberwingert | 550.00 mi (885.14 km) |
| Castel San Giorgio to Oftringen | 562.77 mi (905.70 km) |
| Castel San Giorgio to Olten | 565.05 mi (909.36 km) |
| Castel San Giorgio to Onex | 569.57 mi (916.64 km) |
| Castel San Giorgio to Opfikon | 550.69 mi (886.25 km) |
| Castel San Giorgio to Ostermundigen | 557.03 mi (896.46 km) |
| Castel San Giorgio to Payerne | 568.47 mi (914.87 km) |
| Castel San Giorgio to Pfaffikon | 541.08 mi (870.78 km) |
| Castel San Giorgio to Plan-les-Ouates | 568.24 mi (914.49 km) |
| Castel San Giorgio to Pratteln | 579.89 mi (933.24 km) |
| Castel San Giorgio to Prilly | 566.68 mi (911.99 km) |
| Castel San Giorgio to Pully | 563.55 mi (906.95 km) |
