| Perivale to Orbetello | 829.05 mi (1,334.23 km) |
| Perivale to Oria | 1,144.88 mi (1,842.50 km) |
| Perivale to Oristano | 909.89 mi (1,464.32 km) |
| Perivale to Orta Nova | 1,035.10 mi (1,665.84 km) |
| Perivale to Orte | 864.71 mi (1,391.62 km) |
| Perivale to Ortona | 937.60 mi (1,508.93 km) |
| Perivale to Orvieto | 842.03 mi (1,355.12 km) |
| Perivale to Orzinuovi | 631.76 mi (1,016.72 km) |
| Perivale to Osimo | 848.80 mi (1,366.00 km) |
| Perivale to Ospitaletto | 628.89 mi (1,012.11 km) |
| Perivale to Ostuni | 1,131.22 mi (1,820.52 km) |
| Perivale to Ottaviano | 1,019.09 mi (1,640.06 km) |
| Perivale to Ovada | 630.30 mi (1,014.37 km) |
| Perivale to Ozieri | 877.33 mi (1,411.93 km) |
| Perivale to Paceco | 1,125.86 mi (1,811.90 km) |
