| Queluz to Orbetello | 1,101.26 mi (1,772.31 km) |
| Queluz to Oria | 1,431.06 mi (2,303.07 km) |
| Queluz to Oristano | 956.15 mi (1,538.78 km) |
| Queluz to Orta Nova | 1,328.53 mi (2,138.06 km) |
| Queluz to Orte | 1,160.92 mi (1,868.32 km) |
| Queluz to Ortona | 1,262.77 mi (2,032.23 km) |
| Queluz to Orvieto | 1,148.84 mi (1,848.87 km) |
| Queluz to Orzinuovi | 1,082.93 mi (1,742.81 km) |
| Queluz to Osimo | 1,224.14 mi (1,970.07 km) |
| Queluz to Ospitaletto | 1,092.76 mi (1,758.63 km) |
| Queluz to Ostuni | 1,427.43 mi (2,297.22 km) |
| Queluz to Ottaviano | 1,264.78 mi (2,035.47 km) |
| Queluz to Ovada | 1,006.93 mi (1,620.50 km) |
| Queluz to Ozieri | 978.10 mi (1,574.09 km) |
| Queluz to Paceco | 1,180.24 mi (1,899.42 km) |
