| Olivares to Orbetello | 981.00 mi (1,578.77 km) |
| Olivares to Oria | 1,291.38 mi (2,078.28 km) |
| Olivares to Oristano | 812.70 mi (1,307.91 km) |
| Olivares to Orta Nova | 1,195.07 mi (1,923.29 km) |
| Olivares to Orte | 1,039.37 mi (1,672.70 km) |
| Olivares to Ortona | 1,138.31 mi (1,831.93 km) |
| Olivares to Orvieto | 1,030.08 mi (1,657.76 km) |
| Olivares to Orzinuovi | 996.57 mi (1,603.82 km) |
| Olivares to Osimo | 1,110.73 mi (1,787.55 km) |
| Olivares to Ospitaletto | 1,007.60 mi (1,621.58 km) |
| Olivares to Ostuni | 1,289.37 mi (2,075.03 km) |
| Olivares to Ottaviano | 1,127.85 mi (1,815.10 km) |
| Olivares to Ovada | 916.42 mi (1,474.84 km) |
| Olivares to Ozieri | 841.38 mi (1,354.07 km) |
| Olivares to Paceco | 1,021.33 mi (1,643.67 km) |
