| Vianden to Oerlinghausen | 176.59 mi (284.19 km) |
| Vianden to Oestrich-Winkel | 79.79 mi (128.42 km) |
| Vianden to Offenburg | 127.83 mi (205.73 km) |
| Vianden to Oftersheim | 113.22 mi (182.22 km) |
| Vianden to Ohrdruf | 208.70 mi (335.87 km) |
| Vianden to Ohringen | 155.99 mi (251.04 km) |
| Vianden to Olbernhau | 318.42 mi (512.44 km) |
| Vianden to Olching | 260.38 mi (419.05 km) |
| Vianden to Oldenburg | 237.96 mi (382.95 km) |
| Vianden to Oldenburg in Holstein | 360.89 mi (580.80 km) |
| Vianden to Olfen | 133.46 mi (214.78 km) |
| Vianden to Olpe | 103.49 mi (166.55 km) |
| Vianden to Olsberg | 139.70 mi (224.83 km) |
| Vianden to Oranienburg | 360.34 mi (579.92 km) |
| Vianden to Ortenberg | 129.42 mi (208.28 km) |
