| Latham to Orbetello | 4,119.99 mi (6,630.48 km) |
| Latham to Oria | 4,470.56 mi (7,194.67 km) |
| Latham to Oristano | 4,097.48 mi (6,594.25 km) |
| Latham to Orta Nova | 4,355.46 mi (7,009.44 km) |
| Latham to Orte | 4,169.81 mi (6,710.66 km) |
| Latham to Ortona | 4,260.12 mi (6,856.00 km) |
| Latham to Orvieto | 4,148.41 mi (6,676.22 km) |
| Latham to Orzinuovi | 3,960.20 mi (6,373.32 km) |
| Latham to Osimo | 4,178.56 mi (6,724.74 km) |
| Latham to Ospitaletto | 3,960.74 mi (6,374.19 km) |
| Latham to Ostuni | 4,459.04 mi (7,176.13 km) |
| Latham to Ottaviano | 4,321.16 mi (6,954.23 km) |
| Latham to Ovada | 3,931.73 mi (6,327.50 km) |
| Latham to Ozieri | 4,090.95 mi (6,583.75 km) |
| Latham to Paceco | 4,348.14 mi (6,997.66 km) |
