| Velletri to Oberkirch | 526.65 mi (847.57 km) |
| Velletri to Obernburg am Main | 591.20 mi (951.44 km) |
| Velletri to Obernkirchen | 752.23 mi (1,210.60 km) |
| Velletri to Oberschleissheim | 458.72 mi (738.23 km) |
| Velletri to Oberstdorf | 415.46 mi (668.62 km) |
| Velletri to Obertraubling | 505.20 mi (813.04 km) |
| Velletri to Obertshausen | 610.48 mi (982.47 km) |
| Velletri to Oberursel | 623.23 mi (1,003.00 km) |
| Velletri to Ochsenfurt | 566.88 mi (912.30 km) |
| Velletri to Ochsenhausen | 463.75 mi (746.34 km) |
| Velletri to Ochtrup | 773.92 mi (1,245.50 km) |
| Velletri to Odenthal | 700.81 mi (1,127.84 km) |
| Velletri to Oelde | 735.51 mi (1,183.69 km) |
| Velletri to Oelsnitz | 605.28 mi (974.11 km) |
| Velletri to Oer-Erkenschwick | 736.96 mi (1,186.02 km) |
