| San Salvo to Oberkirch | 552.14 mi (888.59 km) |
| San Salvo to Obernburg am Main | 601.39 mi (967.85 km) |
| San Salvo to Obernkirchen | 753.27 mi (1,212.27 km) |
| San Salvo to Oberschleissheim | 455.48 mi (733.02 km) |
| San Salvo to Oberstdorf | 430.10 mi (692.17 km) |
| San Salvo to Obertraubling | 493.93 mi (794.91 km) |
| San Salvo to Obertshausen | 621.72 mi (1,000.57 km) |
| San Salvo to Oberursel | 635.53 mi (1,022.79 km) |
| San Salvo to Ochsenfurt | 571.09 mi (919.08 km) |
| San Salvo to Ochsenhausen | 477.16 mi (767.91 km) |
| San Salvo to Ochtrup | 785.43 mi (1,264.03 km) |
| San Salvo to Odenthal | 717.87 mi (1,155.30 km) |
| San Salvo to Oelde | 743.40 mi (1,196.39 km) |
| San Salvo to Oelsnitz | 591.14 mi (951.35 km) |
| San Salvo to Oer-Erkenschwick | 750.50 mi (1,207.82 km) |
