| Sesimbra to Orbetello | 1,100.25 mi (1,770.68 km) |
| Sesimbra to Oria | 1,427.38 mi (2,297.15 km) |
| Sesimbra to Oristano | 951.38 mi (1,531.10 km) |
| Sesimbra to Orta Nova | 1,325.77 mi (2,133.62 km) |
| Sesimbra to Orte | 1,159.79 mi (1,866.50 km) |
| Sesimbra to Ortona | 1,261.32 mi (2,029.90 km) |
| Sesimbra to Orvieto | 1,148.10 mi (1,847.69 km) |
| Sesimbra to Orzinuovi | 1,086.48 mi (1,748.52 km) |
| Sesimbra to Osimo | 1,224.26 mi (1,970.26 km) |
| Sesimbra to Ospitaletto | 1,096.48 mi (1,764.62 km) |
| Sesimbra to Ostuni | 1,424.01 mi (2,291.72 km) |
| Sesimbra to Ottaviano | 1,261.42 mi (2,030.06 km) |
| Sesimbra to Ovada | 1,009.82 mi (1,625.15 km) |
| Sesimbra to Ozieri | 974.43 mi (1,568.20 km) |
| Sesimbra to Paceco | 1,173.03 mi (1,887.80 km) |
