| Opfikon to Curtea de Arges | 783.97 mi (1,261.68 km) |
| Opfikon to Dabuleni | 789.54 mi (1,270.64 km) |
| Opfikon to Darabani | 835.98 mi (1,345.39 km) |
| Opfikon to Darmanesti | 846.94 mi (1,363.01 km) |
| Opfikon to Dej | 713.82 mi (1,148.78 km) |
| Opfikon to Deva | 687.84 mi (1,106.97 km) |
| Opfikon to Dolhasca | 841.41 mi (1,354.11 km) |
| Opfikon to Dorohoi | 828.25 mi (1,332.94 km) |
| Opfikon to Draganesti-Olt | 799.66 mi (1,286.92 km) |
| Opfikon to Dragasani | 775.11 mi (1,247.42 km) |
| Opfikon to Drobeta-Turnu Severin | 701.57 mi (1,129.07 km) |
| Opfikon to Fagaras | 784.55 mi (1,262.61 km) |
| Opfikon to Falticeni | 826.81 mi (1,330.63 km) |
| Opfikon to Fetesti | 946.09 mi (1,522.58 km) |
| Opfikon to Filiasi | 747.36 mi (1,202.76 km) |
