| Somerton to Orbetello | 6,222.70 mi (10,014.47 km) |
| Somerton to Oria | 6,541.36 mi (10,527.31 km) |
| Somerton to Oristano | 6,254.32 mi (10,065.35 km) |
| Somerton to Orta Nova | 6,433.38 mi (10,353.52 km) |
| Somerton to Orte | 6,262.16 mi (10,077.97 km) |
| Somerton to Ortona | 6,336.00 mi (10,196.80 km) |
| Somerton to Orvieto | 6,239.53 mi (10,041.56 km) |
| Somerton to Orzinuovi | 6,030.47 mi (9,705.10 km) |
| Somerton to Osimo | 6,246.52 mi (10,052.80 km) |
| Somerton to Ospitaletto | 6,027.44 mi (9,700.23 km) |
| Somerton to Ostuni | 6,527.14 mi (10,504.42 km) |
| Somerton to Ottaviano | 6,417.02 mi (10,327.20 km) |
| Somerton to Ovada | 6,024.09 mi (9,694.84 km) |
| Somerton to Ozieri | 6,236.18 mi (10,036.16 km) |
| Somerton to Paceco | 6,497.05 mi (10,455.99 km) |
