| Tryavna to Oberriet | 833.90 mi (1,342.04 km) |
| Tryavna to Obersiggenthal | 894.50 mi (1,439.56 km) |
| Tryavna to Oberwil | 928.34 mi (1,494.02 km) |
| Tryavna to Oberwingert | 873.54 mi (1,405.82 km) |
| Tryavna to Oftringen | 908.71 mi (1,462.42 km) |
| Tryavna to Olten | 910.00 mi (1,464.50 km) |
| Tryavna to Onex | 980.02 mi (1,577.19 km) |
| Tryavna to Opfikon | 881.15 mi (1,418.08 km) |
| Tryavna to Ostermundigen | 923.02 mi (1,485.45 km) |
| Tryavna to Payerne | 947.07 mi (1,524.16 km) |
| Tryavna to Pfaffikon | 870.19 mi (1,400.43 km) |
| Tryavna to Plan-les-Ouates | 979.10 mi (1,575.71 km) |
| Tryavna to Pratteln | 921.80 mi (1,483.49 km) |
| Tryavna to Prilly | 959.53 mi (1,544.22 km) |
| Tryavna to Pully | 956.23 mi (1,538.90 km) |
