| Breisach am Rhein to Oria | 718.68 mi (1,156.60 km) |
| Breisach am Rhein to Oristano | 563.78 mi (907.31 km) |
| Breisach am Rhein to Orta Nova | 610.78 mi (982.96 km) |
| Breisach am Rhein to Orte | 450.18 mi (724.50 km) |
| Breisach am Rhein to Ortona | 513.75 mi (826.80 km) |
| Breisach am Rhein to Orvieto | 427.76 mi (688.42 km) |
| Breisach am Rhein to Orzinuovi | 213.27 mi (343.23 km) |
| Breisach am Rhein to Osimo | 423.68 mi (681.85 km) |
| Breisach am Rhein to Ospitaletto | 207.79 mi (334.40 km) |
| Breisach am Rhein to Ostuni | 704.73 mi (1,134.16 km) |
| Breisach am Rhein to Ottaviano | 601.11 mi (967.40 km) |
| Breisach am Rhein to Ovada | 239.92 mi (386.12 km) |
| Breisach am Rhein to Ozieri | 519.38 mi (835.85 km) |
| Breisach am Rhein to Paceco | 737.93 mi (1,187.59 km) |
| Breisach am Rhein to Pachino | 869.94 mi (1,400.04 km) |
