| Sevierville to Orbetello | 4,820.84 mi (7,758.40 km) |
| Sevierville to Oria | 5,172.94 mi (8,325.04 km) |
| Sevierville to Oristano | 4,791.70 mi (7,711.49 km) |
| Sevierville to Orta Nova | 5,057.65 mi (8,139.50 km) |
| Sevierville to Orte | 4,871.41 mi (7,839.78 km) |
| Sevierville to Ortona | 4,962.73 mi (7,986.74 km) |
| Sevierville to Orvieto | 4,850.19 mi (7,805.62 km) |
| Sevierville to Orzinuovi | 4,663.97 mi (7,505.93 km) |
| Sevierville to Osimo | 4,881.92 mi (7,856.69 km) |
| Sevierville to Ospitaletto | 4,664.71 mi (7,507.13 km) |
| Sevierville to Ostuni | 5,161.64 mi (8,306.85 km) |
| Sevierville to Ottaviano | 5,021.96 mi (8,082.06 km) |
| Sevierville to Ovada | 4,634.08 mi (7,457.82 km) |
| Sevierville to Ozieri | 4,786.96 mi (7,703.87 km) |
| Sevierville to Paceco | 5,042.43 mi (8,115.00 km) |
