| Gallatin to Orbetello | 4,925.53 mi (7,926.88 km) |
| Gallatin to Oria | 5,275.16 mi (8,489.55 km) |
| Gallatin to Oristano | 4,903.77 mi (7,891.86 km) |
| Gallatin to Orta Nova | 5,160.22 mi (8,304.58 km) |
| Gallatin to Orte | 4,974.97 mi (8,006.44 km) |
| Gallatin to Ortona | 5,064.59 mi (8,150.67 km) |
| Gallatin to Orvieto | 4,953.48 mi (7,971.86 km) |
| Gallatin to Orzinuovi | 4,763.63 mi (7,666.32 km) |
| Gallatin to Osimo | 4,982.38 mi (8,018.36 km) |
| Gallatin to Ospitaletto | 4,763.92 mi (7,666.78 km) |
| Gallatin to Ostuni | 5,263.46 mi (8,470.73 km) |
| Gallatin to Ottaviano | 5,126.69 mi (8,250.61 km) |
| Gallatin to Ovada | 4,736.48 mi (7,622.63 km) |
| Gallatin to Ozieri | 4,897.34 mi (7,881.51 km) |
| Gallatin to Paceco | 5,154.46 mi (8,295.30 km) |
