| Targu Ocna to Oberriet | 808.16 mi (1,300.61 km) |
| Targu Ocna to Obersiggenthal | 867.49 mi (1,396.09 km) |
| Targu Ocna to Oberwil | 901.86 mi (1,451.40 km) |
| Targu Ocna to Oberwingert | 845.20 mi (1,360.22 km) |
| Targu Ocna to Oftringen | 885.40 mi (1,424.92 km) |
| Targu Ocna to Olten | 886.10 mi (1,426.03 km) |
| Targu Ocna to Onex | 978.03 mi (1,573.98 km) |
| Targu Ocna to Opfikon | 854.75 mi (1,375.59 km) |
| Targu Ocna to Ostermundigen | 906.84 mi (1,459.41 km) |
| Targu Ocna to Payerne | 933.76 mi (1,502.75 km) |
| Targu Ocna to Pfaffikon | 844.74 mi (1,359.47 km) |
| Targu Ocna to Plan-les-Ouates | 977.39 mi (1,572.96 km) |
| Targu Ocna to Pratteln | 895.07 mi (1,440.48 km) |
| Targu Ocna to Prilly | 951.40 mi (1,531.13 km) |
| Targu Ocna to Pully | 948.37 mi (1,526.26 km) |
