| Arac to Orbetello | 1,138.17 mi (1,831.71 km) |
| Arac to Oria | 820.50 mi (1,320.47 km) |
| Arac to Oristano | 1,297.09 mi (2,087.47 km) |
| Arac to Orta Nova | 913.08 mi (1,469.46 km) |
| Arac to Orte | 1,078.35 mi (1,735.43 km) |
| Arac to Ortona | 975.98 mi (1,570.69 km) |
| Arac to Orvieto | 1,091.67 mi (1,756.87 km) |
| Arac to Orzinuovi | 1,205.88 mi (1,940.68 km) |
| Arac to Osimo | 1,022.39 mi (1,645.38 km) |
| Arac to Ospitaletto | 1,200.21 mi (1,931.56 km) |
| Arac to Ostuni | 820.81 mi (1,320.97 km) |
| Arac to Ottaviano | 980.74 mi (1,578.35 km) |
| Arac to Ovada | 1,265.20 mi (2,036.15 km) |
| Arac to Ozieri | 1,266.76 mi (2,038.65 km) |
| Arac to Paceco | 1,125.79 mi (1,811.78 km) |
