| Nashville to Orbetello | 4,948.13 mi (7,963.24 km) |
| Nashville to Oria | 5,297.75 mi (8,525.90 km) |
| Nashville to Oristano | 4,926.34 mi (7,928.18 km) |
| Nashville to Orta Nova | 5,182.82 mi (8,340.94 km) |
| Nashville to Orte | 4,997.57 mi (8,042.81 km) |
| Nashville to Ortona | 5,087.18 mi (8,187.03 km) |
| Nashville to Orvieto | 4,976.08 mi (8,008.22 km) |
| Nashville to Orzinuovi | 4,786.21 mi (7,702.65 km) |
| Nashville to Osimo | 5,004.96 mi (8,054.70 km) |
| Nashville to Ospitaletto | 4,786.49 mi (7,703.11 km) |
| Nashville to Ostuni | 5,286.05 mi (8,507.08 km) |
| Nashville to Ottaviano | 5,149.29 mi (8,286.98 km) |
| Nashville to Ovada | 4,759.07 mi (7,658.99 km) |
| Nashville to Ozieri | 4,919.92 mi (7,917.85 km) |
| Nashville to Paceco | 5,177.03 mi (8,331.62 km) |
