| Chillum to Orbetello | 4,403.88 mi (7,087.36 km) |
| Chillum to Oria | 4,756.81 mi (7,655.34 km) |
| Chillum to Oristano | 4,372.82 mi (7,037.37 km) |
| Chillum to Orta Nova | 4,641.41 mi (7,469.63 km) |
| Chillum to Orte | 4,454.85 mi (7,169.40 km) |
| Chillum to Ortona | 4,546.82 mi (7,317.40 km) |
| Chillum to Orvieto | 4,433.74 mi (7,135.41 km) |
| Chillum to Orzinuovi | 4,249.16 mi (6,838.37 km) |
| Chillum to Osimo | 4,466.66 mi (7,188.39 km) |
| Chillum to Ospitaletto | 4,250.13 mi (6,839.92 km) |
| Chillum to Ostuni | 4,745.67 mi (7,637.42 km) |
| Chillum to Ottaviano | 4,604.93 mi (7,410.91 km) |
| Chillum to Ovada | 4,218.06 mi (6,788.31 km) |
| Chillum to Ozieri | 4,368.39 mi (7,030.25 km) |
| Chillum to Paceco | 4,623.53 mi (7,440.85 km) |
