| Secaucus to Orbetello | 4,205.84 mi (6,768.65 km) |
| Secaucus to Oria | 4,558.47 mi (7,336.15 km) |
| Secaucus to Oristano | 4,176.34 mi (6,721.17 km) |
| Secaucus to Orta Nova | 4,443.11 mi (7,150.49 km) |
| Secaucus to Orte | 4,256.65 mi (6,850.42 km) |
| Secaucus to Ortona | 4,348.42 mi (6,998.10 km) |
| Secaucus to Orvieto | 4,235.50 mi (6,816.37 km) |
| Secaucus to Orzinuovi | 4,050.50 mi (6,518.66 km) |
| Secaucus to Osimo | 4,268.09 mi (6,868.83 km) |
| Secaucus to Ospitaletto | 4,051.43 mi (6,520.15 km) |
| Secaucus to Ostuni | 4,547.29 mi (7,318.15 km) |
| Secaucus to Ottaviano | 4,406.92 mi (7,092.25 km) |
| Secaucus to Ovada | 4,019.68 mi (6,469.04 km) |
| Secaucus to Ozieri | 4,171.48 mi (6,713.35 km) |
| Secaucus to Paceco | 4,427.08 mi (7,124.69 km) |
