| Targu Secuiesc to Nuth | 984.66 mi (1,584.66 km) |
| Targu Secuiesc to Oegstgeest | 1,064.52 mi (1,713.19 km) |
| Targu Secuiesc to Oirschot | 1,018.33 mi (1,638.85 km) |
| Targu Secuiesc to Oisterwijk | 1,023.88 mi (1,647.78 km) |
| Targu Secuiesc to Oldebroek | 1,011.74 mi (1,628.24 km) |
| Targu Secuiesc to Oldenzaal | 967.50 mi (1,557.05 km) |
| Targu Secuiesc to Ommen | 992.60 mi (1,597.44 km) |
| Targu Secuiesc to Oosterend | 1,017.74 mi (1,637.89 km) |
| Targu Secuiesc to Oosterhout | 1,039.16 mi (1,672.37 km) |
| Targu Secuiesc to Oosterwolde | 1,008.65 mi (1,623.27 km) |
| Targu Secuiesc to Oostzaan | 1,052.28 mi (1,693.49 km) |
| Targu Secuiesc to Opmeer | 1,055.00 mi (1,697.86 km) |
| Targu Secuiesc to Oss | 1,013.90 mi (1,631.72 km) |
| Targu Secuiesc to Oud-Beijerland | 1,060.99 mi (1,707.50 km) |
| Targu Secuiesc to Oudenbosch | 1,052.20 mi (1,693.36 km) |
