| Dos Hermanas to Orbetello | 973.89 mi (1,567.33 km) |
| Dos Hermanas to Oria | 1,282.12 mi (2,063.38 km) |
| Dos Hermanas to Oristano | 803.45 mi (1,293.02 km) |
| Dos Hermanas to Orta Nova | 1,186.49 mi (1,909.47 km) |
| Dos Hermanas to Orte | 1,032.07 mi (1,660.96 km) |
| Dos Hermanas to Ortona | 1,130.64 mi (1,819.59 km) |
| Dos Hermanas to Orvieto | 1,023.07 mi (1,646.47 km) |
| Dos Hermanas to Orzinuovi | 992.63 mi (1,597.49 km) |
| Dos Hermanas to Osimo | 1,104.15 mi (1,776.95 km) |
| Dos Hermanas to Ospitaletto | 1,003.76 mi (1,615.40 km) |
| Dos Hermanas to Ostuni | 1,280.27 mi (2,060.39 km) |
| Dos Hermanas to Ottaviano | 1,118.97 mi (1,800.81 km) |
| Dos Hermanas to Ovada | 912.23 mi (1,468.09 km) |
| Dos Hermanas to Ozieri | 832.80 mi (1,340.26 km) |
| Dos Hermanas to Paceco | 1,010.25 mi (1,625.83 km) |
