| Arpacay to Orbetello | 1,652.14 mi (2,658.86 km) |
| Arpacay to Oria | 1,342.02 mi (2,159.77 km) |
| Arpacay to Oristano | 1,817.66 mi (2,925.25 km) |
| Arpacay to Orta Nova | 1,432.60 mi (2,305.54 km) |
| Arpacay to Orte | 1,592.56 mi (2,562.98 km) |
| Arpacay to Ortona | 1,491.24 mi (2,399.91 km) |
| Arpacay to Orvieto | 1,604.55 mi (2,582.27 km) |
| Arpacay to Orzinuovi | 1,700.65 mi (2,736.93 km) |
| Arpacay to Osimo | 1,531.11 mi (2,464.08 km) |
| Arpacay to Ospitaletto | 1,693.66 mi (2,725.69 km) |
| Arpacay to Ostuni | 1,342.05 mi (2,159.82 km) |
| Arpacay to Ottaviano | 1,501.14 mi (2,415.86 km) |
| Arpacay to Ovada | 1,765.78 mi (2,841.75 km) |
| Arpacay to Ozieri | 1,786.17 mi (2,874.56 km) |
| Arpacay to Paceco | 1,646.41 mi (2,649.65 km) |
