| Peniche to Orbetello | 1,092.95 mi (1,758.94 km) |
| Peniche to Oria | 1,427.26 mi (2,296.95 km) |
| Peniche to Oristano | 954.83 mi (1,536.65 km) |
| Peniche to Orta Nova | 1,323.13 mi (2,129.38 km) |
| Peniche to Orte | 1,152.75 mi (1,855.16 km) |
| Peniche to Ortona | 1,255.07 mi (2,019.84 km) |
| Peniche to Orvieto | 1,139.98 mi (1,834.62 km) |
| Peniche to Orzinuovi | 1,066.71 mi (1,716.70 km) |
| Peniche to Osimo | 1,213.71 mi (1,953.29 km) |
| Peniche to Ospitaletto | 1,076.24 mi (1,732.05 km) |
| Peniche to Ostuni | 1,423.15 mi (2,290.35 km) |
| Peniche to Ottaviano | 1,260.54 mi (2,028.64 km) |
| Peniche to Ovada | 991.92 mi (1,596.33 km) |
| Peniche to Ozieri | 974.71 mi (1,568.65 km) |
| Peniche to Paceco | 1,183.21 mi (1,904.19 km) |
