| Asker to Orbetello | 1,202.24 mi (1,934.81 km) |
| Asker to Oria | 1,371.31 mi (2,206.90 km) |
| Asker to Oristano | 1,379.17 mi (2,219.56 km) |
| Asker to Orta Nova | 1,298.15 mi (2,089.17 km) |
| Asker to Orte | 1,203.18 mi (1,936.33 km) |
| Asker to Ortona | 1,219.60 mi (1,962.76 km) |
| Asker to Orvieto | 1,184.63 mi (1,906.48 km) |
| Asker to Orzinuovi | 997.45 mi (1,605.24 km) |
| Asker to Osimo | 1,136.87 mi (1,829.62 km) |
| Asker to Ospitaletto | 986.62 mi (1,587.80 km) |
| Asker to Ostuni | 1,354.98 mi (2,180.63 km) |
| Asker to Ottaviano | 1,323.04 mi (2,129.23 km) |
| Asker to Ovada | 1,052.44 mi (1,693.73 km) |
| Asker to Ozieri | 1,331.36 mi (2,142.62 km) |
| Asker to Paceco | 1,512.53 mi (2,434.18 km) |
