| Alcobendas to Orbetello | 778.55 mi (1,252.96 km) |
| Alcobendas to Oria | 1,114.32 mi (1,793.33 km) |
| Alcobendas to Oristano | 645.90 mi (1,039.47 km) |
| Alcobendas to Orta Nova | 1,009.18 mi (1,624.12 km) |
| Alcobendas to Orte | 838.33 mi (1,349.16 km) |
| Alcobendas to Ortona | 940.61 mi (1,513.76 km) |
| Alcobendas to Orvieto | 825.73 mi (1,328.89 km) |
| Alcobendas to Orzinuovi | 762.56 mi (1,227.23 km) |
| Alcobendas to Osimo | 900.33 mi (1,448.94 km) |
| Alcobendas to Ospitaletto | 772.82 mi (1,243.73 km) |
| Alcobendas to Ostuni | 1,109.85 mi (1,786.13 km) |
| Alcobendas to Ottaviano | 947.36 mi (1,524.63 km) |
| Alcobendas to Ovada | 685.15 mi (1,102.64 km) |
| Alcobendas to Ozieri | 662.77 mi (1,066.62 km) |
| Alcobendas to Paceco | 882.19 mi (1,419.75 km) |
