| Tortona to Oberriet | 170.69 mi (274.70 km) |
| Tortona to Obersiggenthal | 181.22 mi (291.65 km) |
| Tortona to Oberwil | 191.52 mi (308.22 km) |
| Tortona to Oberwingert | 181.28 mi (291.74 km) |
| Tortona to Oftringen | 173.44 mi (279.12 km) |
| Tortona to Olten | 175.86 mi (283.03 km) |
| Tortona to Onex | 160.75 mi (258.71 km) |
| Tortona to Opfikon | 176.02 mi (283.27 km) |
| Tortona to Ostermundigen | 156.99 mi (252.66 km) |
| Tortona to Payerne | 162.13 mi (260.93 km) |
| Tortona to Pfaffikon | 170.88 mi (275.00 km) |
| Tortona to Plan-les-Ouates | 159.46 mi (256.63 km) |
| Tortona to Pratteln | 189.57 mi (305.08 km) |
| Tortona to Prilly | 157.38 mi (253.28 km) |
| Tortona to Pully | 154.34 mi (248.38 km) |
