| Omurtag to Oberriet | 868.34 mi (1,397.47 km) |
| Omurtag to Obersiggenthal | 929.06 mi (1,495.18 km) |
| Omurtag to Oberwil | 963.13 mi (1,550.00 km) |
| Omurtag to Oberwingert | 907.81 mi (1,460.98 km) |
| Omurtag to Oftringen | 943.85 mi (1,518.98 km) |
| Omurtag to Olten | 945.07 mi (1,520.94 km) |
| Omurtag to Onex | 1,018.27 mi (1,638.74 km) |
| Omurtag to Opfikon | 915.74 mi (1,473.74 km) |
| Omurtag to Ostermundigen | 959.20 mi (1,543.68 km) |
| Omurtag to Payerne | 983.73 mi (1,583.16 km) |
| Omurtag to Pfaffikon | 904.85 mi (1,456.22 km) |
| Omurtag to Plan-les-Ouates | 1,017.37 mi (1,637.31 km) |
| Omurtag to Pratteln | 956.52 mi (1,539.38 km) |
| Omurtag to Prilly | 996.92 mi (1,604.39 km) |
| Omurtag to Pully | 993.64 mi (1,599.11 km) |
