| Velletri to Oerlinghausen | 737.49 mi (1,186.87 km) |
| Velletri to Oestrich-Winkel | 619.79 mi (997.45 km) |
| Velletri to Offenburg | 525.81 mi (846.21 km) |
| Velletri to Oftersheim | 569.54 mi (916.59 km) |
| Velletri to Ohrdruf | 640.46 mi (1,030.72 km) |
| Velletri to Ohringen | 544.16 mi (875.74 km) |
| Velletri to Olbernhau | 622.39 mi (1,001.64 km) |
| Velletri to Olching | 457.05 mi (735.55 km) |
| Velletri to Oldenburg | 820.85 mi (1,321.03 km) |
| Velletri to Oldenburg in Holstein | 877.20 mi (1,411.72 km) |
| Velletri to Olfen | 739.53 mi (1,190.16 km) |
| Velletri to Olpe | 687.42 mi (1,106.29 km) |
| Velletri to Olsberg | 699.28 mi (1,125.39 km) |
| Velletri to Oranienburg | 766.38 mi (1,233.37 km) |
| Velletri to Ortenberg | 626.23 mi (1,007.83 km) |
