| Ponte de Sor to Orbetello | 1,026.55 mi (1,652.08 km) |
| Ponte de Sor to Oria | 1,358.05 mi (2,185.56 km) |
| Ponte de Sor to Oristano | 884.35 mi (1,423.22 km) |
| Ponte de Sor to Orta Nova | 1,254.81 mi (2,019.42 km) |
| Ponte de Sor to Orte | 1,086.25 mi (1,748.16 km) |
| Ponte de Sor to Ortona | 1,188.25 mi (1,912.30 km) |
| Ponte de Sor to Orvieto | 1,074.00 mi (1,728.43 km) |
| Ponte de Sor to Orzinuovi | 1,007.67 mi (1,621.69 km) |
| Ponte de Sor to Osimo | 1,149.00 mi (1,849.13 km) |
| Ponte de Sor to Ospitaletto | 1,017.54 mi (1,637.58 km) |
| Ponte de Sor to Ostuni | 1,354.20 mi (2,179.37 km) |
| Ponte de Sor to Ottaviano | 1,191.54 mi (1,917.60 km) |
| Ponte de Sor to Ovada | 931.55 mi (1,499.19 km) |
| Ponte de Sor to Ozieri | 905.21 mi (1,456.79 km) |
| Ponte de Sor to Paceco | 1,111.35 mi (1,788.54 km) |
