| Revere to Orbetello | 4,011.82 mi (6,456.40 km) |
| Revere to Oria | 4,364.24 mi (7,023.56 km) |
| Revere to Oristano | 3,983.60 mi (6,410.99 km) |
| Revere to Orta Nova | 4,248.89 mi (6,837.93 km) |
| Revere to Orte | 4,062.52 mi (6,537.99 km) |
| Revere to Ortona | 4,154.14 mi (6,685.44 km) |
| Revere to Orvieto | 4,041.33 mi (6,503.90 km) |
| Revere to Orzinuovi | 3,856.08 mi (6,205.76 km) |
| Revere to Osimo | 4,073.72 mi (6,556.01 km) |
| Revere to Ospitaletto | 3,856.99 mi (6,207.23 km) |
| Revere to Ostuni | 4,353.02 mi (7,005.51 km) |
| Revere to Ottaviano | 4,212.92 mi (6,780.04 km) |
| Revere to Ovada | 3,825.42 mi (6,156.41 km) |
| Revere to Ozieri | 3,978.37 mi (6,402.56 km) |
| Revere to Paceco | 4,234.35 mi (6,814.52 km) |
