| Halfeti to Orbetello | 1,452.12 mi (2,336.96 km) |
| Halfeti to Oria | 1,108.64 mi (1,784.19 km) |
| Halfeti to Oristano | 1,584.71 mi (2,550.34 km) |
| Halfeti to Orta Nova | 1,214.17 mi (1,954.02 km) |
| Halfeti to Orte | 1,392.75 mi (2,241.42 km) |
| Halfeti to Ortona | 1,289.87 mi (2,075.84 km) |
| Halfeti to Orvieto | 1,408.75 mi (2,267.17 km) |
| Halfeti to Orzinuovi | 1,545.23 mi (2,486.80 km) |
| Halfeti to Osimo | 1,348.14 mi (2,169.62 km) |
| Halfeti to Ospitaletto | 1,540.77 mi (2,479.63 km) |
| Halfeti to Ostuni | 1,112.81 mi (1,790.89 km) |
| Halfeti to Ottaviano | 1,275.37 mi (2,052.51 km) |
| Halfeti to Ovada | 1,598.06 mi (2,571.83 km) |
| Halfeti to Ozieri | 1,561.50 mi (2,512.98 km) |
| Halfeti to Paceco | 1,382.19 mi (2,224.43 km) |
