| Castalla to Oberriet | 792.94 mi (1,276.12 km) |
| Castalla to Obersiggenthal | 761.89 mi (1,226.14 km) |
| Castalla to Oberwil | 742.04 mi (1,194.19 km) |
| Castalla to Oberwingert | 777.87 mi (1,251.86 km) |
| Castalla to Oftringen | 741.68 mi (1,193.62 km) |
| Castalla to Olten | 742.99 mi (1,195.72 km) |
| Castalla to Onex | 627.28 mi (1,009.50 km) |
| Castalla to Opfikon | 767.32 mi (1,234.87 km) |
| Castalla to Ostermundigen | 709.62 mi (1,142.02 km) |
| Castalla to Payerne | 686.01 mi (1,104.02 km) |
| Castalla to Pfaffikon | 770.51 mi (1,240.02 km) |
| Castalla to Plan-les-Ouates | 626.81 mi (1,008.76 km) |
| Castalla to Pratteln | 746.31 mi (1,201.07 km) |
| Castalla to Prilly | 660.87 mi (1,063.56 km) |
| Castalla to Pully | 661.84 mi (1,065.13 km) |
